diff --git a/res/textures/block.png b/res/textures/block.png
index 8309b545..2879bd8f 100644
Binary files a/res/textures/block.png and b/res/textures/block.png differ
diff --git a/src/constants.h b/src/constants.h
index 97a3f4e7..e2665635 100644
--- a/src/constants.h
+++ b/src/constants.h
@@ -14,7 +14,7 @@
 /* BLOCK_VOID is block id used to mark non-existing voxel (voxel of missing chunk) */
 #define BLOCK_VOID (blockid_t)((2 << (sizeof(blockid_t)*CHAR_BIT)) - 1)
 
-inline uint vox_index(int x, int y, int z, int w, int d) {
+inline uint vox_index(int x, int y, int z, int w=CHUNK_W, int d=CHUNK_D) {
 	return (y * d + z) * w + x;
 }
 
diff --git a/src/content/Content.cpp b/src/content/Content.cpp
new file mode 100644
index 00000000..0a1f88bc
--- /dev/null
+++ b/src/content/Content.cpp
@@ -0,0 +1,50 @@
+#include "Content.h"
+
+#include <stdexcept>
+
+#include "../voxels/Block.h"
+
+using std::vector;
+using std::string;
+using std::unordered_map;
+
+void ContentBuilder::add(Block* def) {
+    if (blockDefs.find(def->name) != blockDefs.end()) {
+        throw std::runtime_error("block name duplicate: "+def->name);
+    }
+    blockDefs[def->name] = def;
+    blockIds.push_back(def->name);
+}
+
+Content* ContentBuilder::build() {
+    vector<Block*> blockDefsIndices;
+    for (const string& name : blockIds) {
+        Block* def = blockDefs[name];
+        def->id = blockDefsIndices.size();
+        blockDefsIndices.push_back(def);
+    }
+    ContentIndices* indices = new ContentIndices(blockDefsIndices);
+    return new Content(indices, blockDefs);
+}
+
+ContentIndices::ContentIndices(vector<Block*> blockDefs)
+               : blockDefs(blockDefs) {
+}
+
+Content::Content(ContentIndices* indices,
+                 unordered_map<string, Block*> blockDefs)
+        : blockDefs(blockDefs),
+          indices(indices) {
+}
+
+Content::~Content() {
+    delete indices;
+}
+
+Block* Content::require(std::string id) const {
+    auto found = blockDefs.find(id);
+    if (found == blockDefs.end()) {
+        throw std::runtime_error("missing block "+id);
+    }
+    return found->second;
+}
diff --git a/src/content/Content.h b/src/content/Content.h
new file mode 100644
index 00000000..184d866d
--- /dev/null
+++ b/src/content/Content.h
@@ -0,0 +1,57 @@
+#ifndef CONTENT_CONTENT_H_
+#define CONTENT_CONTENT_H_
+
+#include <string>
+#include <vector>
+#include <unordered_map>
+#include "../typedefs.h"
+
+class Block;
+class Content;
+
+class ContentBuilder {
+    std::unordered_map<std::string, Block*> blockDefs;
+    std::vector<std::string> blockIds;
+public:
+    void add(Block* def);
+
+    Content* build();
+};
+
+/* Runtime defs cache: indices */
+class ContentIndices {
+    // blockDefs must be a plain vector with block id used as index
+    std::vector<Block*> blockDefs;
+public:
+    ContentIndices(std::vector<Block*> blockDefs);
+
+    inline Block* getBlockDef(blockid_t id) const {
+        if (id >= blockDefs.size())
+            return nullptr;
+        return blockDefs[id];
+    }
+
+    inline size_t countBlockDefs() const {
+        return blockDefs.size();
+    }
+
+    // use this for critical spots to prevent range check overhead
+    const Block* const* getBlockDefs() const {
+        return blockDefs.data();
+    }
+};
+
+/* Content is a definitions repository */
+class Content {
+    std::unordered_map<std::string, Block*> blockDefs;
+public:
+    ContentIndices* const indices;
+    
+    Content(ContentIndices* indices, 
+            std::unordered_map<std::string, Block*> blockDefs);
+    ~Content();
+    
+    Block* require(std::string id) const;
+};
+
+#endif // CONTENT_CONTENT_H_
\ No newline at end of file
diff --git a/src/definitions.cpp b/src/definitions.cpp
index d0112e48..eb4e68dd 100644
--- a/src/definitions.cpp
+++ b/src/definitions.cpp
@@ -1,97 +1,95 @@
 #include "definitions.h"
 
+#include "content/Content.h"
 #include "window/Window.h"
 #include "window/Events.h"
 #include "window/input.h"
 #include "voxels/Block.h"
 
 // All in-game definitions (blocks, items, etc..)
-void setup_definitions() {
-	for (size_t i = 0; i < 256; i++) {
-		Block::blocks[i] = nullptr;
-	}
-
-	Block* block = new Block(BLOCK_AIR, 0);
+void setup_definitions(ContentBuilder* builder) {
+	// TODO: automatic atlas generation instead of using texture indices
+	Block* block = new Block("core:air", 0);
 	block->drawGroup = 1;
 	block->lightPassing = true;
 	block->skyLightPassing = true;
 	block->obstacle = false;
 	block->selectable = false;
 	block->model = BlockModel::none;
-	Block::blocks[block->id] = block;
+	builder->add(block);
 
-	block = new Block(BLOCK_DIRT, 2);
-	Block::blocks[block->id] = block;
+	block = new Block("base:dirt", 2);
+	builder->add(block);
 
-	block = new Block(BLOCK_GRASS_BLOCK, 4);
+	block = new Block("base:grass_block", 4);
 	block->textureFaces[2] = 2;
 	block->textureFaces[3] = 1;
-	Block::blocks[block->id] = block;
+	builder->add(block);
 
-	block = new Block(BLOCK_LAMP, 3);
+	block = new Block("base:lamp", 3);
 	block->emission[0] = 15;
 	block->emission[1] = 14;
 	block->emission[2] = 13;
-	Block::blocks[block->id] = block;
+	builder->add(block);
 
-	block = new Block(BLOCK_GLASS,5);
+	block = new Block("base:glass",5);
 	block->drawGroup = 2;
 	block->lightPassing = true;
-	Block::blocks[block->id] = block;
+	builder->add(block);
 
-	block = new Block(BLOCK_PLANKS, 6);
-	Block::blocks[block->id] = block;
+	block = new Block("base:planks", 6);
+	builder->add(block);
 
-	block = new Block(BLOCK_WOOD, 7);
+	block = new Block("base:wood", 7);
 	block->textureFaces[2] = 8;
 	block->textureFaces[3] = 8;
 	block->rotatable = true;
-	Block::blocks[block->id] = block;
+	builder->add(block);
 
-	block = new Block(BLOCK_LEAVES, 9);
-	Block::blocks[block->id] = block;
+	block = new Block("base:leaves", 9);
+	builder->add(block);
 
-	block = new Block(BLOCK_STONE, 10);
-	Block::blocks[block->id] = block;
+	block = new Block("base:stone", 10);
+	builder->add(block);
 
-	block = new Block(BLOCK_WATER, 11);
+	block = new Block("base:water", 11);
 	block->drawGroup = 4;
 	block->lightPassing = true;
 	block->skyLightPassing = false;
 	block->obstacle = false;
 	block->selectable = false;
-	Block::blocks[block->id] = block;
+	builder->add(block);
 
-	block = new Block(BLOCK_SAND, 12);
-	Block::blocks[block->id] = block;
+	block = new Block("base:sand", 12);
+	builder->add(block);
 
-	block = new Block(BLOCK_BEDROCK, 13);
+	block = new Block("base:bedrock", 13);
 	block->breakable = false;
-	Block::blocks[block->id] = block;
+	builder->add(block);
 
-	block = new Block(BLOCK_GRASS, 14);
+	block = new Block("base:grass", 14);
 	block->drawGroup = 5;
 	block->lightPassing = true;
 	block->obstacle = false;
 	block->model = BlockModel::xsprite;
 	block->hitboxScale = 0.5f;
-	Block::blocks[block->id] = block;
+	builder->add(block);
 
-	block = new Block(BLOCK_FLOWER, 16);
+	block = new Block("base:flower", 16);
 	block->drawGroup = 5;
 	block->lightPassing = true;
 	block->obstacle = false;
 	block->model = BlockModel::xsprite;
-	Block::blocks[block->id] = block;
+	builder->add(block);
 
-	block = new Block(BLOCK_BRICK, 17);
-	Block::blocks[block->id] = block;
+	block = new Block("base:brick", 17);
+	builder->add(block);
 
-	block = new Block(BLOCK_METAL, 18);
-	Block::blocks[block->id] = block;
+	block = new Block("base:metal", 18);
+	builder->add(block);
 
-	block = new Block(BLOCK_RUST, 19);
-	Block::blocks[block->id] = block;
+	block = new Block("base:rust", 19);
+	builder->add(block);
 }
 
 void setup_bindings() {
diff --git a/src/definitions.h b/src/definitions.h
index c4b5e0ba..31dc982c 100644
--- a/src/definitions.h
+++ b/src/definitions.h
@@ -4,25 +4,10 @@
 #include <iostream>
 #include "core_defs.h"
 
-#define BLOCK_DIRT 1
-#define BLOCK_GRASS_BLOCK 2
-#define BLOCK_LAMP 3
-#define BLOCK_GLASS 4
-#define BLOCK_PLANKS 5
-#define BLOCK_WOOD 6
-#define BLOCK_LEAVES 7
-#define BLOCK_STONE 8
-#define BLOCK_WATER 9
-#define BLOCK_SAND 10
-#define BLOCK_BEDROCK 11
-#define BLOCK_GRASS 12
-#define BLOCK_FLOWER 13
-#define BLOCK_BRICK 14
-#define BLOCK_METAL 15
-#define BLOCK_RUST 16
+class ContentBuilder;
 
 extern void setup_bindings();
-extern void setup_definitions();
+extern void setup_definitions(ContentBuilder* builder);
 
 #endif // DECLARATIONS_H
 
diff --git a/src/engine.cpp b/src/engine.cpp
index 572db177..3f0e014e 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -41,7 +41,8 @@ using std::filesystem::path;
 using glm::vec3;
 using gui::GUI;
 
-Engine::Engine(EngineSettings& settings) : settings(settings) {    
+Engine::Engine(EngineSettings& settings, Content* content) 
+	   : settings(settings), content(content) {    
 	Window::initialize(settings.display);
 
 	assets = new Assets();
@@ -128,4 +129,8 @@ Assets* Engine::getAssets() {
 
 void Engine::setScreen(shared_ptr<Screen> screen) {
 	this->screen = screen;
+}
+
+const Content* Engine::getContent() const {
+	return content;
 }
\ No newline at end of file
diff --git a/src/engine.h b/src/engine.h
index 76c56ee3..879cc948 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -10,6 +10,7 @@
 class Assets;
 class Level;
 class Screen;
+class Content;
 
 namespace gui {
 	class GUI;
@@ -24,6 +25,7 @@ class Engine {
 	Assets* assets;
 	std::shared_ptr<Screen> screen = nullptr;
 	EngineSettings& settings;
+	Content* content;
 
 	uint64_t frame = 0;
 	double lastTime = 0.0;
@@ -31,7 +33,7 @@ class Engine {
 
 	gui::GUI* gui;
 public:
-	Engine(EngineSettings& settings);
+	Engine(EngineSettings& settings, Content* content);
 	~Engine();
 
 	void updateTimers();
@@ -42,6 +44,8 @@ public:
 	gui::GUI* getGUI();
 	EngineSettings& getSettings();
 	void setScreen(std::shared_ptr<Screen> screen);
+
+	const Content* getContent() const;
 };
 
 #endif // SRC_ENGINE_H_
\ No newline at end of file
diff --git a/src/files/settings_io.cpp b/src/files/settings_io.cpp
new file mode 100644
index 00000000..fff17c1b
--- /dev/null
+++ b/src/files/settings_io.cpp
@@ -0,0 +1,77 @@
+#include "settings_io.h"
+
+#include <iostream>
+
+#include "../window/Events.h"
+#include "../window/input.h"
+
+#include "../coders/json.h"
+
+using std::string;
+
+toml::Wrapper create_wrapper(EngineSettings& settings) {
+	toml::Wrapper wrapper;
+	toml::Section& display = wrapper.add("display");
+	display.add("width", &settings.display.width);
+	display.add("height", &settings.display.height);
+	display.add("samples", &settings.display.samples);
+	display.add("swap-interval", &settings.display.swapInterval);
+
+	toml::Section& chunks = wrapper.add("chunks");
+	chunks.add("load-distance", &settings.chunks.loadDistance);
+	chunks.add("load-speed", &settings.chunks.loadSpeed);
+	chunks.add("padding", &settings.chunks.padding);
+	
+	toml::Section& camera = wrapper.add("camera");
+	camera.add("fov-effects", &settings.camera.fovEvents);
+	camera.add("shaking", &settings.camera.shaking);
+
+	toml::Section& graphics = wrapper.add("graphics");
+	graphics.add("fog-curve", &settings.graphics.fogCurve);
+
+	toml::Section& debug = wrapper.add("debug");
+	debug.add("generator-test-mode", &settings.debug.generatorTestMode);
+	return wrapper;
+}
+
+string write_controls() {
+	json::JObject* obj = new json::JObject();
+	for (auto& entry : Events::bindings) {
+		const auto& binding = entry.second;
+
+		json::JObject* jentry = new json::JObject();
+		switch (binding.type) {
+			case inputtype::keyboard: jentry->put("type", "keyboard"); break;
+			case inputtype::mouse: jentry->put("type", "mouse"); break;
+			default: throw std::runtime_error("unsupported control type");
+		}
+		jentry->put("code", binding.code);
+		obj->put(entry.first, jentry);
+	}
+	return json::stringify(obj, true, "  ");
+}
+
+void load_controls(string filename, string source) {
+	json::JObject* obj = json::parse(filename, source);
+	for (auto& entry : Events::bindings) {
+		auto& binding = entry.second;
+
+		json::JObject* jentry = obj->obj(entry.first);
+		if (jentry == nullptr)
+			continue;
+		inputtype type;
+		string typestr;
+		jentry->str("type", typestr);
+
+		if (typestr == "keyboard") {
+			type = inputtype::keyboard;
+		} else if (typestr == "mouse") {
+			type = inputtype::mouse;
+		} else {
+			std::cerr << "unknown input type '" << typestr << "'" << std::endl;
+			continue;
+		}
+		binding.type = type;
+		jentry->num("code", binding.code);
+	}
+}
\ No newline at end of file
diff --git a/src/files/settings_io.h b/src/files/settings_io.h
new file mode 100644
index 00000000..e40a6daa
--- /dev/null
+++ b/src/files/settings_io.h
@@ -0,0 +1,12 @@
+#ifndef FILES_SETTINGS_IO_H_
+#define FILES_SETTINGS_IO_H_
+
+#include <string>
+#include "../coders/toml.h"
+#include "../settings.h"
+
+extern std::string write_controls();
+extern toml::Wrapper create_wrapper(EngineSettings& settings);
+extern void load_controls(std::string filename, std::string source);
+
+#endif // FILES_SETTINGS_IO_H_
\ No newline at end of file
diff --git a/src/frontend/hud.cpp b/src/frontend/hud.cpp
index d22eacae..42d3b145 100644
--- a/src/frontend/hud.cpp
+++ b/src/frontend/hud.cpp
@@ -3,11 +3,13 @@
 #include <iostream>
 #include <sstream>
 #include <memory>
+#include <assert.h>
 #include <stdexcept>
 #include <GL/glew.h>
 #include <GLFW/glfw3.h>
 
 #include "../typedefs.h"
+#include "../content/Content.h"
 #include "../util/stringutil.h"
 #include "../assets/Assets.h"
 #include "../graphics/Shader.h"
@@ -24,6 +26,7 @@
 #include "../world/Level.h"
 #include "../objects/Player.h"
 #include "../physics/Hitbox.h"
+#include "../maths/voxmaths.h"
 #include "gui/controls.h"
 #include "gui/panels.h"
 #include "gui/UINode.h"
@@ -45,7 +48,10 @@ inline Label* create_label(gui::wstringsupplier supplier) {
 	return label;
 }
 
-HudRenderer::HudRenderer(Engine* engine, Level* level) : level(level), assets(engine->getAssets()), gui(engine->getGUI()) {
+HudRenderer::HudRenderer(Engine* engine, Level* level) 
+            : level(level), 
+			  assets(engine->getAssets()), 
+			  gui(engine->getGUI()) {
 	auto menu = gui->getMenu();
 	batch = new Batch2D(1024);
 	uicamera = new Camera(vec3(), 1);
@@ -93,7 +99,7 @@ HudRenderer::HudRenderer(Engine* engine, Level* level) : level(level), assets(en
 		str[0] += ax;
 		Label* label = new Label(str);
 		label->margin(vec4(2, 3, 2, 3));
-		sub->add(shared_ptr<UINode>(label));
+		sub->add(label);
 		sub->color(vec4(0.0f));
 
 		// Coord input
@@ -111,8 +117,8 @@ HudRenderer::HudRenderer(Engine* engine, Level* level) : level(level), assets(en
 			}
 		});
 
-		sub->add(shared_ptr<UINode>(box));
-		panel->add(shared_ptr<UINode>(sub));
+		sub->add(box);
+		panel->add(sub);
 	}
 	panel->refresh();
 	menu->reset();
@@ -133,68 +139,46 @@ void HudRenderer::drawDebug(int fps, bool occlusion){
 	fpsMax = max(fps, fpsMax);
 }
 
-void HudRenderer::drawInventory(const GfxContext& ctx, Player* player) {
+/* Inventory temporary replaced with blocks access panel */
+void HudRenderer::drawContentAccess(const GfxContext& ctx, Player* player) {
+	const Content* content = level->content;
+	const ContentIndices* contentIds = content->indices;
+
 	const Viewport& viewport = ctx.getViewport();
 	const uint width = viewport.getWidth();
-	const uint height = viewport.getHeight();
 
-	Texture* blocks = assets->getTexture("block_tex");
-	uint size = 48;
-	uint step = 64;
-	uint inv_cols = 10;
-	uint inv_rows = 8;
-	uint inv_w = step*inv_cols + size;
-	uint inv_h = step*inv_rows + size;
-	int inv_x = (width - (inv_w)) / 2;
-	int inv_y = (height - (inv_h)) / 2;
-	int xs = (width - inv_w + step)/2;
-	int ys = (height - inv_h + step)/2;
-	if (width > inv_w*3){
-		inv_x = (width + (inv_w)) / 2;
-		inv_y = (height - (inv_h)) / 2;
-		xs = (width + inv_w + step)/2;
-		ys = (height - inv_h + step)/2;
-	}
+	uint count = contentIds->countBlockDefs();
+	uint icon_size = 48;
+	uint interval = 4;
+	uint inv_cols = 8;
+	uint inv_rows = ceildiv(count-1, inv_cols);
+	int pad_x = interval;
+	int pad_y = interval;
+	uint inv_w = inv_cols * icon_size + (inv_cols-1) * interval + pad_x * 2;
+	uint inv_h = inv_rows * icon_size + (inv_rows-1) * interval + pad_x * 2;
+	int inv_x = (width - (inv_w));
+	int inv_y = 0;
+	int xs = inv_x + pad_x;
+	int ys = inv_y + pad_y;
+
 	vec4 tint = vec4(1.0f);
 	int mx = Events::x;
 	int my = Events::y;
-	uint count = inv_cols * inv_rows;
 
-	// back
+	// background
 	batch->texture(nullptr);
-	batch->color = vec4(0.0f, 0.0f, 0.0f, 0.3f);
-	batch->rect(inv_x - 4, inv_y - 4, inv_w+8, inv_h+8,
-					0.95f, 0.95f, 0.95f, 0.85f, 0.85f, 0.85f,
-					0.7f, 0.7f, 0.7f,
-					0.55f, 0.55f, 0.55f, 0.45f, 0.45f, 0.45f, 4);
-	batch->rect(inv_x, inv_y, inv_w, inv_h,
-					0.75f, 0.75f, 0.75f, 0.75f, 0.75f, 0.75f,
-					0.75f, 0.75f, 0.75f,
-					0.75f, 0.75f, 0.75f, 0.75f, 0.75f, 0.75f, 4);
+	batch->color = vec4(0.0f, 0.0f, 0.0f, 0.5f);
+	batch->rect(inv_x, inv_y, inv_w, inv_h);
 
-	batch->color = vec4(0.35f, 0.35f, 0.35f, 1.0f);
-	for (uint i = 0; i < count; i++) {
-		int x = xs + step * (i % (inv_cols));
-		int y = ys + step * (i / (inv_cols));
-		batch->rect(x-2, y-2, size+4, size+4,
-					0.45f, 0.45f, 0.45f, 0.55f, 0.55f, 0.55f,
-					0.7f, 0.7f, 0.7f,
-					0.85f, 0.85f, 0.85f, 0.95f, 0.95f, 0.95f, 2);
-		batch->rect(x, y, size, size,
-					0.65f, 0.65f, 0.65f, 0.65f, 0.65f, 0.65f,
-					0.65f, 0.65f, 0.65f,
-					0.65f, 0.65f, 0.65f, 0.65f, 0.65f, 0.65f, 2);
-	}
-
-	// front
-	batch->texture(blocks);
-	for (uint i = 0; i < count; i++) {
-		Block* cblock = Block::blocks[i+1];
+	// blocks & items
+	batch->texture(assets->getTexture("block_tex"));
+	for (uint i = 0; i < count-1; i++) {
+		Block* cblock = contentIds->getBlockDef(i+1);
 		if (cblock == nullptr)
 			break;
-		int x = xs + step * (i % inv_cols);
-		int y = ys + step * (i / inv_cols);
-		if (mx > x && mx < x + (int)size && my > y && my < y + (int)size) {
+		int x = xs + (icon_size+interval) * (i % inv_cols);
+		int y = ys + (icon_size+interval) * (i / inv_cols);
+		if (mx > x && mx < x + (int)icon_size && my > y && my < y + (int)icon_size) {
 			tint.r *= 1.2f;
 			tint.g *= 1.2f;
 			tint.b *= 1.2f;
@@ -206,9 +190,9 @@ void HudRenderer::drawInventory(const GfxContext& ctx, Player* player) {
 		}
 		
 		if (cblock->model == BlockModel::block){
-			batch->blockSprite(x, y, size, size, 16, cblock->textureFaces, tint);
+			batch->blockSprite(x, y, icon_size, icon_size, 16, cblock->textureFaces, tint);
 		} else if (cblock->model == BlockModel::xsprite){
-			batch->sprite(x, y, size, size, 16, cblock->textureFaces[3], tint);
+			batch->sprite(x, y, icon_size, icon_size, 16, cblock->textureFaces[3], tint);
 		}
 	}
 }
@@ -234,11 +218,15 @@ void HudRenderer::update() {
 			inventoryOpen = !inventoryOpen;
 		}
 	}
-	if ((pause || inventoryOpen) == Events::_cursor_locked)
+	if ((pause || inventoryOpen) == Events::_cursor_locked) {
 		Events::toggleCursor();
+	}
 }
 
 void HudRenderer::draw(const GfxContext& ctx){
+	const Content* content = level->content;
+	const ContentIndices* contentIds = content->indices;
+
 	const Viewport& viewport = ctx.getViewport();
 	const uint width = viewport.getWidth();
 	const uint height = viewport.getHeight();
@@ -265,31 +253,19 @@ void HudRenderer::draw(const GfxContext& ctx){
 	}
 	Player* player = level->player;
 
-	batch->rect(width/2-128-4, height-80-4, 256+8, 64+8,
-						0.95f, 0.95f, 0.95f, 0.85f, 0.85f, 0.85f,
-						0.7f, 0.7f, 0.7f,
-						0.55f, 0.55f, 0.55f, 0.45f, 0.45f, 0.45f, 4);
-	batch->rect(width/2-128, height - 80, 256, 64,
-						0.75f, 0.75f, 0.75f, 0.75f, 0.75f, 0.75f,
-						0.75f, 0.75f, 0.75f,
-						0.75f, 0.75f, 0.75f, 0.75f, 0.75f, 0.75f, 4);
-	batch->rect(width/2-32+2, height - 80+2, 60, 60,
-						0.45f, 0.45f, 0.45f, 0.55f, 0.55f, 0.55f,
-						0.7f, 0.7f, 0.7f,
-						0.85f, 0.85f, 0.85f, 0.95f, 0.95f, 0.95f, 2);
-	batch->rect(width/2-32+4, height - 80+4, 56, 56,
-						0.75f, 0.75f, 0.75f, 0.75f, 0.75f, 0.75f,
-						0.75f, 0.75f, 0.75f,
-						0.75f, 0.75f, 0.75f, 0.75f, 0.75f, 0.75f, 2);
 
+	batch->color = vec4(0.0f, 0.0f, 0.0f, 0.5f);
+	batch->rect(width - 68, height - 68, 68, 68);
+
+	batch->color = vec4(1.0f);
 	batch->texture(blocks);
-
 	{
-		Block* cblock = Block::blocks[player->choosenBlock];
+		Block* cblock = contentIds->getBlockDef(player->choosenBlock);
+		assert(cblock != nullptr);
 		if (cblock->model == BlockModel::block){
-			batch->blockSprite(width/2-24, uicamera->fov - 72, 48, 48, 16, cblock->textureFaces, vec4(1.0f));
+			batch->blockSprite(width-56, uicamera->fov - 56, 48, 48, 16, cblock->textureFaces, vec4(1.0f));
 		} else if (cblock->model == BlockModel::xsprite){
-			batch->sprite(width/2-24, uicamera->fov - 72, 48, 48, 16, cblock->textureFaces[3], vec4(1.0f));
+			batch->sprite(width-56, uicamera->fov - 56, 48, 48, 16, cblock->textureFaces[3], vec4(1.0f));
 		}
 	}
 
@@ -299,7 +275,7 @@ void HudRenderer::draw(const GfxContext& ctx){
 		batch->rect(0, 0, width, height);
 	}
 	if (inventoryOpen) {
-        drawInventory(ctx, player);
+        drawContentAccess(ctx, player);
 	}
 	batch->render();
 }
diff --git a/src/frontend/hud.h b/src/frontend/hud.h
index 2da61830..68f1d668 100644
--- a/src/frontend/hud.h
+++ b/src/frontend/hud.h
@@ -40,7 +40,7 @@ public:
 	~HudRenderer();
 
 	void update();
-	void drawInventory(const GfxContext& ctx, Player* player);
+	void drawContentAccess(const GfxContext& ctx, Player* player);
 	void draw(const GfxContext& context);
 	void drawDebug(int fps, bool occlusion);
 
diff --git a/src/frontend/menu.cpp b/src/frontend/menu.cpp
index f014f4a9..b1361599 100644
--- a/src/frontend/menu.cpp
+++ b/src/frontend/menu.cpp
@@ -60,7 +60,8 @@ Panel* create_main_menu_panel(Engine* engine, PagesControl* menu) {
 
                 auto folder = enginefs::get_worlds_folder()/u8path(name);
                 World* world = new World(name, folder, 42, settings);
-                auto screen = new LevelScreen(engine, world->load(settings));
+                auto screen = new LevelScreen(engine, 
+                    world->load(settings, engine->getContent()));
                 engine->setScreen(shared_ptr<Screen>(screen));
             });
             worldsPanel->add(button);
@@ -148,7 +149,7 @@ Panel* create_new_world_panel(Engine* engine, PagesControl* menu) {
             auto folder = enginefs::get_worlds_folder()/u8path(nameutf8);
             std::filesystem::create_directories(folder);
             World* world = new World(nameutf8, folder, seed, settings);
-            auto screen = new LevelScreen(engine, world->load(settings));
+            auto screen = new LevelScreen(engine, world->load(settings, engine->getContent()));
             engine->setScreen(shared_ptr<Screen>(screen));
         });
         panel->add(button);
diff --git a/src/frontend/world_render.cpp b/src/frontend/world_render.cpp
index 5e102287..c06649ec 100644
--- a/src/frontend/world_render.cpp
+++ b/src/frontend/world_render.cpp
@@ -3,7 +3,9 @@
 #include <iostream>
 #include <GL/glew.h>
 #include <memory>
+#include <assert.h>
 
+#include "../content/Content.h"
 #include "../graphics/ChunksRenderer.h"
 #include "../window/Window.h"
 #include "../window/Camera.h"
@@ -94,6 +96,8 @@ void WorldRenderer::drawChunks(Chunks* chunks,
 
 
 void WorldRenderer::draw(const GfxContext& pctx, Camera* camera, bool occlusion){
+	const Content* content = level->content;
+	const ContentIndices* contentIds = content->indices;
 	Assets* assets = engine->getAssets();
 	Texture* texture = assets->getTexture("block");
 	Shader* shader = assets->getShader("main");
@@ -127,7 +131,8 @@ void WorldRenderer::draw(const GfxContext& pctx, Camera* camera, bool occlusion)
 		shader->uniform1f("u_fogCurve", settings.graphics.fogCurve);
 		shader->uniform3f("u_cameraPos", camera->position);
 
-		Block* cblock = Block::blocks[level->player->choosenBlock];
+		Block* cblock = contentIds->getBlockDef(level->player->choosenBlock);
+		assert(cblock != nullptr);
 		float multiplier = 0.5f;
 		shader->uniform3f("u_torchlightColor",
 				cblock->emission[0] / 15.0f * multiplier,
@@ -142,7 +147,8 @@ void WorldRenderer::draw(const GfxContext& pctx, Camera* camera, bool occlusion)
 		shader->uniformMatrix("u_model", mat4(1.0f));
 
 		if (level->playerController->selectedBlockId != -1){
-			Block* block = Block::blocks[level->playerController->selectedBlockId];
+			Block* block = contentIds->getBlockDef(level->playerController->selectedBlockId);
+			assert(block != nullptr);
 			vec3 pos = level->playerController->selectedBlockPosition;
 			linesShader->use();
 			linesShader->uniformMatrix("u_projview", camera->getProjView());
diff --git a/src/graphics/BlocksRenderer.cpp b/src/graphics/BlocksRenderer.cpp
index af421a01..6dae363a 100644
--- a/src/graphics/BlocksRenderer.cpp
+++ b/src/graphics/BlocksRenderer.cpp
@@ -5,6 +5,7 @@
 #include "Mesh.h"
 #include "UVRegion.h"
 #include "../constants.h"
+#include "../content/Content.h"
 #include "../voxels/Block.h"
 #include "../voxels/Chunk.h"
 #include "../voxels/VoxelsVolume.h"
@@ -17,10 +18,16 @@ using glm::vec4;
 
 #define VERTEX_SIZE 9
 
-BlocksRenderer::BlocksRenderer(size_t capacity) : vertexOffset(0), indexOffset(0), indexSize(0), capacity(capacity) {
+BlocksRenderer::BlocksRenderer(size_t capacity, const Content* content) 
+			   : content(content), 
+			     vertexOffset(0), 
+				 indexOffset(0), 
+				 indexSize(0), 
+				 capacity(capacity) {
 	vertexBuffer = new float[capacity];
 	indexBuffer = new int[capacity];
 	voxelsBuffer = new VoxelsVolume(CHUNK_W + 2, CHUNK_H, CHUNK_D + 2);
+	blockDefsCache = content->indices->getBlockDefs();
 }
 
 BlocksRenderer::~BlocksRenderer() {
@@ -256,7 +263,7 @@ bool BlocksRenderer::isOpen(int x, int y, int z, ubyte group) const {
 	blockid_t id = voxelsBuffer->pickBlockId(chunk->x * CHUNK_W + x, y, chunk->z * CHUNK_D + z);
 	if (id == BLOCK_VOID)
 		return false;
-	const Block& block = *Block::blocks[id];
+	const Block& block = *blockDefsCache[id];
 	if (block.drawGroup != group && block.lightPassing) {
 		return true;
 	}
@@ -267,7 +274,7 @@ bool BlocksRenderer::isOpenForLight(int x, int y, int z) const {
 	blockid_t id = voxelsBuffer->pickBlockId(chunk->x * CHUNK_W + x, y, chunk->z * CHUNK_D + z);
 	if (id == BLOCK_VOID)
 		return false;
-	const Block& block = *Block::blocks[id];
+	const Block& block = *blockDefsCache[id];
 	if (block.lightPassing) {
 		return true;
 	}
@@ -311,7 +318,7 @@ void BlocksRenderer::render(const voxel* voxels, int atlas_size) {
 		for (int i = begin; i < end; i++) {
 			const voxel& vox = voxels[i];
 			blockid_t id = vox.id;
-			const Block& def = *Block::blocks[id];
+			const Block& def = *blockDefsCache[id];
 			if (!id || def.drawGroup != group)
 				continue;
 			const UVRegion texfaces[6]{ uvfor(def, 0, atlas_size), uvfor(def, 1, atlas_size),
diff --git a/src/graphics/BlocksRenderer.h b/src/graphics/BlocksRenderer.h
index 03c0d412..3c956d41 100644
--- a/src/graphics/BlocksRenderer.h
+++ b/src/graphics/BlocksRenderer.h
@@ -7,6 +7,7 @@
 #include "../typedefs.h"
 #include "../voxels/voxel.h"
 
+class Content;
 class Mesh;
 class Block;
 class Chunk;
@@ -15,6 +16,7 @@ class VoxelsVolume;
 class ChunksStorage;
 
 class BlocksRenderer {
+	const Content* const content;
 	float* vertexBuffer;
 	int* indexBuffer;
 	size_t vertexOffset;
@@ -26,6 +28,8 @@ class BlocksRenderer {
 	const Chunk* chunk = nullptr;
 	VoxelsVolume* voxelsBuffer;
 
+	const Block* const* blockDefsCache;
+
 	void vertex(const glm::vec3& coord, float u, float v, const glm::vec4& light);
 	void index(int a, int b, int c, int d, int e, int f);
 
@@ -64,7 +68,7 @@ class BlocksRenderer {
 	glm::vec4 pickSoftLight(int x, int y, int z, const glm::ivec3& right, const glm::ivec3& up) const;
 	void render(const voxel* voxels, int atlas_size);
 public:
-	BlocksRenderer(size_t capacity);
+	BlocksRenderer(size_t capacity, const Content* content);
 	virtual ~BlocksRenderer();
 
 	Mesh* render(const Chunk* chunk, int atlas_size, const ChunksStorage* chunks);
diff --git a/src/graphics/ChunksRenderer.cpp b/src/graphics/ChunksRenderer.cpp
index a74550c8..2e14a496 100644
--- a/src/graphics/ChunksRenderer.cpp
+++ b/src/graphics/ChunksRenderer.cpp
@@ -13,7 +13,7 @@ using std::shared_ptr;
 
 ChunksRenderer::ChunksRenderer(Level* level) : level(level) {
 	const int MAX_FULL_CUBES = 3000;
-	renderer = new BlocksRenderer(9 * 6 * 6 * MAX_FULL_CUBES);
+	renderer = new BlocksRenderer(9 * 6 * 6 * MAX_FULL_CUBES, level->content);
 }
 
 ChunksRenderer::~ChunksRenderer() {
diff --git a/src/lighting/LightSolver.cpp b/src/lighting/LightSolver.cpp
index 07070a05..f6c53442 100644
--- a/src/lighting/LightSolver.cpp
+++ b/src/lighting/LightSolver.cpp
@@ -2,12 +2,14 @@
 #include <assert.h>
 #include "LightSolver.h"
 #include "Lightmap.h"
+#include "../content/Content.h"
 #include "../voxels/Chunks.h"
 #include "../voxels/Chunk.h"
 #include "../voxels/voxel.h"
 #include "../voxels/Block.h"
 
-LightSolver::LightSolver(Chunks* chunks, int channel) : chunks(chunks), channel(channel) {
+LightSolver::LightSolver(const ContentIndices* contentIds, Chunks* chunks, int channel) 
+	: contentIds(contentIds), chunks(chunks), channel(channel) {
 }
 
 void LightSolver::add(int x, int y, int z, int emission) {
@@ -93,6 +95,7 @@ void LightSolver::solve(){
 		}
 	}
 
+	const Block* const* blockDefs = contentIds->getBlockDefs();
 	while (!addqueue.empty()){
 		const lightentry entry = addqueue.front();
 		addqueue.pop();
@@ -108,7 +111,7 @@ void LightSolver::solve(){
 			if (chunk) {
 				int light = chunks->getLight(x,y,z, channel);
 				voxel* v = chunks->get(x,y,z);
-				Block* block = Block::blocks[v->id];
+				const Block* block = blockDefs[v->id];
 				if (block->lightPassing && light+2 <= entry.light){
 					chunk->lightmap->set(x-chunk->x*CHUNK_W, y, z-chunk->z*CHUNK_D, channel, entry.light-1);
 					chunk->setModified(true);
diff --git a/src/lighting/LightSolver.h b/src/lighting/LightSolver.h
index 4ef8fa3f..25648ced 100644
--- a/src/lighting/LightSolver.h
+++ b/src/lighting/LightSolver.h
@@ -4,6 +4,7 @@
 #include <queue>
 
 class Chunks;
+class ContentIndices;
 
 struct lightentry {
 	int x;
@@ -15,10 +16,11 @@ struct lightentry {
 class LightSolver {
 	std::queue<lightentry> addqueue;
 	std::queue<lightentry> remqueue;
+	const ContentIndices* const contentIds;
 	Chunks* chunks;
 	int channel;
 public:
-	LightSolver(Chunks* chunks, int channel);
+	LightSolver(const ContentIndices* contentIds, Chunks* chunks, int channel);
 
 	void add(int x, int y, int z);
 	void add(int x, int y, int z, int emission);
diff --git a/src/lighting/Lighting.cpp b/src/lighting/Lighting.cpp
index f4d884e8..568bfe9f 100644
--- a/src/lighting/Lighting.cpp
+++ b/src/lighting/Lighting.cpp
@@ -1,22 +1,25 @@
 #include "Lighting.h"
 #include "LightSolver.h"
 #include "Lightmap.h"
+#include "../content/Content.h"
 #include "../voxels/Chunks.h"
 #include "../voxels/Chunk.h"
 #include "../voxels/voxel.h"
 #include "../voxels/Block.h"
+#include "../constants.h"
 
 #include <memory>
 #include <iostream>
 
 using std::shared_ptr;
 
-Lighting::Lighting(Chunks* chunks){
-	this->chunks = chunks;
-	solverR = new LightSolver(chunks, 0);
-	solverG = new LightSolver(chunks, 1);
-	solverB = new LightSolver(chunks, 2);
-	solverS = new LightSolver(chunks, 3);
+Lighting::Lighting(const Content* content, Chunks* chunks) 
+	     : content(content), chunks(chunks) {
+	const ContentIndices* contentIds = content->indices;
+	solverR = new LightSolver(contentIds, chunks, 0);
+	solverG = new LightSolver(contentIds, chunks, 1);
+	solverB = new LightSolver(contentIds, chunks, 2);
+	solverS = new LightSolver(contentIds, chunks, 3);
 }
 
 Lighting::~Lighting(){
@@ -39,6 +42,8 @@ void Lighting::clear(){
 }
 
 void Lighting::prebuildSkyLight(int cx, int cz){
+	const Block* const* blockDefs = content->indices->getBlockDefs();
+
 	Chunk* chunk = chunks->getChunk(cx, cz);
 	int highestPoint = 0;
 	for (int z = 0; z < CHUNK_D; z++){
@@ -47,7 +52,7 @@ void Lighting::prebuildSkyLight(int cx, int cz){
 				if (y < 0)
 					break;
 				voxel* vox = &(chunk->voxels[(y * CHUNK_D + z) * CHUNK_W + x]);
-				Block* block = Block::blocks[vox->id];
+				const Block* block = blockDefs[vox->id];
 				if (!block->skyLightPassing) {
 					if (highestPoint < y)
 						highestPoint = y;
@@ -63,13 +68,15 @@ void Lighting::prebuildSkyLight(int cx, int cz){
 }
 
 void Lighting::buildSkyLight(int cx, int cz){
+	const Block* const* blockDefs = content->indices->getBlockDefs();
+
 	Chunk* chunk = chunks->getChunk(cx, cz);
 	for (int z = 0; z < CHUNK_D; z++){
 		for (int x = 0; x < CHUNK_W; x++){
 			for (int y = chunk->lightmap->highestPoint; y >= 0; y--){
 				int gx = x + cx * CHUNK_W;
 				int gz = z + cz * CHUNK_D;
-				while (y > 0 && !Block::blocks[chunk->voxels[(y * CHUNK_D + z) * CHUNK_W + x].id]->lightPassing) {
+				while (y > 0 && !blockDefs[chunk->voxels[vox_index(x, y, z)].id]->lightPassing) {
 					y--;
 				}
 				if (chunk->lightmap->getS(x, y, z) != 15) {
@@ -88,13 +95,14 @@ void Lighting::buildSkyLight(int cx, int cz){
 }
 
 void Lighting::onChunkLoaded(int cx, int cz){
+	const Block* const* blockDefs = content->indices->getBlockDefs();
 	const Chunk* chunk = chunks->getChunk(cx, cz);
 
 	for (unsigned int y = 0; y < CHUNK_H; y++){
 		for (unsigned int z = 0; z < CHUNK_D; z++){
 			for (unsigned int x = 0; x < CHUNK_W; x++){
 				voxel vox = chunk->voxels[(y * CHUNK_D + z) * CHUNK_W + x];
-				Block* block = Block::blocks[vox.id];
+				const Block* block = blockDefs[vox.id];
 				int gx = x + cx * CHUNK_W;
 				int gz = z + cz * CHUNK_D;
 				if (block->emission[0] || block->emission[1] || block->emission[2]){
@@ -128,8 +136,8 @@ void Lighting::onChunkLoaded(int cx, int cz){
 	solverS->solve();
 }
 
-void Lighting::onBlockSet(int x, int y, int z, int id){
-	Block* block = Block::blocks[id];
+void Lighting::onBlockSet(int x, int y, int z, int const id){
+	Block* block = content->indices->getBlockDef(id);
 	if (id == 0){
 		solverR->remove(x,y,z);
 		solverG->remove(x,y,z);
@@ -140,7 +148,7 @@ void Lighting::onBlockSet(int x, int y, int z, int id){
 		if (chunks->getLight(x,y+1,z, 3) == 0xF){
 			for (int i = y; i >= 0; i--){
 				voxel* vox = chunks->get(x,i,z);
-				if ((vox == nullptr || vox->id != 0) && Block::blocks[id]->skyLightPassing)
+				if ((vox == nullptr || vox->id != 0) && block->skyLightPassing)
 					break;
 				solverS->add(x,i,z, 0xF);
 			}
diff --git a/src/lighting/Lighting.h b/src/lighting/Lighting.h
index e1caf777..dbec1033 100644
--- a/src/lighting/Lighting.h
+++ b/src/lighting/Lighting.h
@@ -1,17 +1,19 @@
 #ifndef LIGHTING_LIGHTING_H_
 #define LIGHTING_LIGHTING_H_
 
+class Content;
 class Chunks;
 class LightSolver;
 
 class Lighting {
-	Chunks* chunks = nullptr;
-	LightSolver* solverR = nullptr;
-	LightSolver* solverG = nullptr;
-	LightSolver* solverB = nullptr;
-	LightSolver* solverS = nullptr;
+	const Content* const content;
+	Chunks* chunks;
+	LightSolver* solverR;
+	LightSolver* solverG;
+	LightSolver* solverB;
+	LightSolver* solverS;
 public:
-	Lighting(Chunks* chunks);
+	Lighting(const Content* content, Chunks* chunks);
 	~Lighting();
 
 	void clear();
diff --git a/src/objects/player_control.cpp b/src/objects/player_control.cpp
index 0c426164..fac74e19 100644
--- a/src/objects/player_control.cpp
+++ b/src/objects/player_control.cpp
@@ -5,6 +5,7 @@
 #include "../physics/Hitbox.h"
 #include "../lighting/Lighting.h"
 #include "../world/Level.h"
+#include "../content/Content.h"
 #include "../voxels/Block.h"
 #include "../voxels/voxel.h"
 #include "../voxels/Chunks.h"
@@ -211,6 +212,7 @@ void PlayerController::updateCameraControl() {
 }
 
 void PlayerController::updateInteraction(){
+	const ContentIndices* contentIds = level->contentIds;
 	Chunks* chunks = level->chunks;
 	Player* player = level->player;
 	Lighting* lighting = level->lighting;
@@ -241,7 +243,7 @@ void PlayerController::updateInteraction(){
 		int z = (int)iend.z;
 		uint8_t states = 0;
 
-		if (Block::blocks[player->choosenBlock]->rotatable){
+		if (contentIds->getBlockDef(player->choosenBlock)->rotatable){
 			if (abs(norm.x) > abs(norm.z)){
 				if (abs(norm.x) > abs(norm.y)) states = BLOCK_DIR_X;
 				if (abs(norm.x) < abs(norm.y)) states = BLOCK_DIR_Y;
@@ -252,7 +254,7 @@ void PlayerController::updateInteraction(){
 			}
 		}
 		
-		Block* block = Block::blocks[vox->id];
+		Block* block = contentIds->getBlockDef(vox->id);
 		if (lclick && block->breakable){
 			chunks->set(x,y,z, 0, 0);
 			lighting->onBlockSet(x,y,z, 0);
diff --git a/src/voxel_engine.cpp b/src/voxel_engine.cpp
index 05d82244..509fff61 100644
--- a/src/voxel_engine.cpp
+++ b/src/voxel_engine.cpp
@@ -6,86 +6,19 @@
 #include <stdexcept>
 
 #include "definitions.h"
-
-#include "util/platform.h"
 #include "engine.h"
-
+#include "util/platform.h"
 #include "coders/toml.h"
-#include "coders/json.h"
 #include "files/files.h"
-
-#include "window/Events.h"
-
-toml::Wrapper create_wrapper(EngineSettings& settings) {
-	toml::Wrapper wrapper;
-	toml::Section& display = wrapper.add("display");
-	display.add("width", &settings.display.width);
-	display.add("height", &settings.display.height);
-	display.add("samples", &settings.display.samples);
-	display.add("swap-interval", &settings.display.swapInterval);
-
-	toml::Section& chunks = wrapper.add("chunks");
-	chunks.add("load-distance", &settings.chunks.loadDistance);
-	chunks.add("load-speed", &settings.chunks.loadSpeed);
-	chunks.add("padding", &settings.chunks.padding);
-	
-	toml::Section& camera = wrapper.add("camera");
-	camera.add("fov-effects", &settings.camera.fovEvents);
-	camera.add("shaking", &settings.camera.shaking);
-
-	toml::Section& graphics = wrapper.add("graphics");
-	graphics.add("fog-curve", &settings.graphics.fogCurve);
-
-	toml::Section& debug = wrapper.add("debug");
-	debug.add("generator-test-mode", &settings.debug.generatorTestMode);
-	return wrapper;
-}
-
-std::string write_controls() {
-	json::JObject* obj = new json::JObject();
-	for (auto& entry : Events::bindings) {
-		const auto& binding = entry.second;
-
-		json::JObject* jentry = new json::JObject();
-		switch (binding.type) {
-			case inputtype::keyboard: jentry->put("type", "keyboard"); break;
-			case inputtype::mouse: jentry->put("type", "mouse"); break;
-			default: throw std::runtime_error("unsupported control type");
-		}
-		jentry->put("code", binding.code);
-		obj->put(entry.first, jentry);
-	}
-	return json::stringify(obj, true, "  ");
-}
-
-void load_controls(std::string filename, std::string source) {
-	json::JObject* obj = json::parse(filename, source);
-	for (auto& entry : Events::bindings) {
-		auto& binding = entry.second;
-
-		json::JObject* jentry = obj->obj(entry.first);
-		if (jentry == nullptr)
-			continue;
-		inputtype type;
-		std::string typestr;
-		jentry->str("type", typestr);
-
-		if (typestr == "keyboard") {
-			type = inputtype::keyboard;
-		} else if (typestr == "mouse") {
-			type = inputtype::mouse;
-		} else {
-			std::cerr << "unknown input type '" << typestr << "'" << std::endl;
-			continue;
-		}
-		binding.type = type;
-		jentry->num("code", binding.code);
-	}
-}
+#include "files/settings_io.h"
+#include "content/Content.h"
 
 int main() {
 	platform::configure_encoding();
-	setup_definitions();
+	ContentBuilder contentBuilder;
+	setup_definitions(&contentBuilder);
+
+	std::unique_ptr<Content> content(contentBuilder.build());
 	try {
 	    EngineSettings settings;
 		toml::Wrapper wrapper = create_wrapper(settings);
@@ -98,7 +31,7 @@ int main() {
 			toml::Reader reader(&wrapper, settings_file.string(), content);
 			reader.read();
 		}
-		Engine engine(settings);
+		Engine engine(settings, content.get());
 		setup_bindings();
 		if (std::filesystem::is_regular_file(controls_file)) {
 			std::cout << "-- loading controls" << std::endl;
diff --git a/src/voxels/Block.cpp b/src/voxels/Block.cpp
index 49d399c5..880facf3 100644
--- a/src/voxels/Block.cpp
+++ b/src/voxels/Block.cpp
@@ -1,8 +1,6 @@
 #include "Block.h"
 
-Block* Block::blocks[256];
-
-Block::Block(unsigned int id, int texture) : id(id),
+Block::Block(std::string name, int texture) : name(name),
 		textureFaces{texture,texture,texture,texture,texture,texture},
 		emission{0,0,0}{
 }
diff --git a/src/voxels/Block.h b/src/voxels/Block.h
index d38fa2c4..bd177e74 100644
--- a/src/voxels/Block.h
+++ b/src/voxels/Block.h
@@ -1,6 +1,8 @@
 #ifndef VOXELS_BLOCK_H_
 #define VOXELS_BLOCK_H_
 
+#include <string>
+
 #define FACE_MX 0
 #define FACE_PX 1
 #define FACE_MY 2
@@ -14,9 +16,8 @@ enum class BlockModel {
 
 class Block {
 public:
-	static Block* blocks[256];
-
-	const unsigned int id;
+	std::string const name;
+	unsigned int id;
 						 //  0 1   2 3   4 5
 	int textureFaces[6]; // -x,x, -y,y, -z,z
 	unsigned char emission[3];
@@ -30,7 +31,7 @@ public:
 	bool rotatable = false;
 	float hitboxScale = 1;
 
-	Block(unsigned int id, int texture);
+	Block(std::string name, int texture);
 };
 
 #endif /* VOXELS_BLOCK_H_ */
diff --git a/src/voxels/Chunks.cpp b/src/voxels/Chunks.cpp
index 55eeef07..227faa25 100644
--- a/src/voxels/Chunks.cpp
+++ b/src/voxels/Chunks.cpp
@@ -3,6 +3,7 @@
 #include "voxel.h"
 #include "Block.h"
 #include "WorldGenerator.h"
+#include "../content/Content.h"
 #include "../lighting/Lightmap.h"
 #include "../files/WorldFiles.h"
 #include "../world/LevelEvents.h"
@@ -16,8 +17,16 @@
 using glm::vec3;
 using std::shared_ptr;
 
-Chunks::Chunks(int w, int d, int ox, int oz, WorldFiles* wfile, LevelEvents* events) 
-		: w(w), d(d), ox(ox), oz(oz), worldFiles(wfile), events(events) {
+Chunks::Chunks(int w, int d, 
+			   int ox, int oz, 
+			   WorldFiles* wfile, 
+			   LevelEvents* events, 
+			   const Content* content) 
+		: content(content),
+		  contentIds(content->indices), 
+		  w(w), d(d), ox(ox), oz(oz), 
+		  worldFiles(wfile), 
+		  events(events) {
 	volume = (size_t)w*(size_t)d;
 	chunks = new shared_ptr<Chunk>[volume];
 	chunksSecond = new shared_ptr<Chunk>[volume];
@@ -59,7 +68,7 @@ bool Chunks::isObstacle(int x, int y, int z){
 	voxel* v = get(x,y,z);
 	if (v == nullptr)
 		return true; // void - is obstacle
-	return Block::blocks[v->id]->obstacle;
+	return contentIds->getBlockDef(v->id)->obstacle;
 }
 
 ubyte Chunks::getLight(int x, int y, int z, int channel){
@@ -191,7 +200,7 @@ voxel* Chunks::rayCast(vec3 start,
 
 	while (t <= maxDist){
 		voxel* voxel = get(ix, iy, iz);
-		if (voxel == nullptr || Block::blocks[voxel->id]->selectable){
+		if (voxel == nullptr || contentIds->getBlockDef(voxel->id)->selectable){
 			end.x = px + t * dx;
 			end.y = py + t * dy;
 			end.z = pz + t * dz;
diff --git a/src/voxels/Chunks.h b/src/voxels/Chunks.h
index b8ae4102..5f9ffa3d 100644
--- a/src/voxels/Chunks.h
+++ b/src/voxels/Chunks.h
@@ -8,6 +8,8 @@
 
 class VoxelRenderer;
 
+class Content;
+class ContentIndices;
 class Chunk;
 class voxel;
 class WorldFiles;
@@ -15,6 +17,8 @@ class LevelEvents;
 
 /* Player-centred chunks matrix */
 class Chunks {
+	const Content* const content;
+	const ContentIndices* const contentIds;
 public:
 	std::shared_ptr<Chunk>* chunks;
 	std::shared_ptr<Chunk>* chunksSecond;
@@ -27,7 +31,7 @@ public:
 	LevelEvents* events;
 
 	Chunks(int w, int d, int ox, int oz, 
-		   WorldFiles* worldFiles, LevelEvents* events);
+		   WorldFiles* worldFiles, LevelEvents* events, const Content* content);
 	~Chunks();
 
 	bool putChunk(std::shared_ptr<Chunk> chunk);
diff --git a/src/voxels/ChunksController.cpp b/src/voxels/ChunksController.cpp
index 78ec6f16..2073b117 100644
--- a/src/voxels/ChunksController.cpp
+++ b/src/voxels/ChunksController.cpp
@@ -4,6 +4,7 @@
 #include "Chunks.h"
 #include "ChunksStorage.h"
 #include "WorldGenerator.h"
+#include "../content/Content.h"
 #include "../graphics/Mesh.h"
 #include "../lighting/Lighting.h"
 #include "../files/WorldFiles.h"
@@ -26,10 +27,15 @@ using std::chrono::microseconds;
 
 
 ChunksController::ChunksController(Level* level, Chunks* chunks, Lighting* lighting, uint padding) 
-    : level(level), chunks(chunks), lighting(lighting), padding(padding) {
+    : level(level), 
+	  chunks(chunks), 
+	  lighting(lighting), 
+	  padding(padding), 
+	  generator(new WorldGenerator(level->content)) {
 }
 
 ChunksController::~ChunksController(){
+	delete generator;
 }
 
 void ChunksController::update(int64_t maxDuration) {
@@ -50,6 +56,7 @@ void ChunksController::update(int64_t maxDuration) {
 }
 
 bool ChunksController::loadVisible(){
+	const Content* content = level->content;
 	const int w = chunks->w;
 	const int d = chunks->d;
 	const int ox = chunks->ox;
@@ -99,15 +106,16 @@ bool ChunksController::loadVisible(){
 	chunks->putChunk(chunk);
 
 	if (!chunk->isLoaded()) {
-		WorldGenerator::generate(chunk->voxels, chunk->x, chunk->z, level->world->seed);
+		generator->generate(chunk->voxels, chunk->x, chunk->z, level->world->seed);
 		chunk->setUnsaved(true);
 	}
 
 	chunk->updateHeights();
 
+	ContentIndices* indices = content->indices;
 	for (size_t i = 0; i < CHUNK_VOL; i++) {
 		blockid_t id = chunk->voxels[i].id;
-		if (Block::blocks[id] == nullptr) {
+		if (indices->getBlockDef(id) == nullptr) {
 			std::cout << "corruped block detected at " << i << " of chunk ";
 			std::cout << chunk->x << "x" << chunk->z;
 			std::cout << " -> " << (int)id << std::endl;
diff --git a/src/voxels/ChunksController.h b/src/voxels/ChunksController.h
index 1a2b0908..7c6e37c1 100644
--- a/src/voxels/ChunksController.h
+++ b/src/voxels/ChunksController.h
@@ -9,6 +9,7 @@ class Lighting;
 class WorldFiles;
 class VoxelRenderer;
 class ChunksLoader;
+class WorldGenerator;
 
 class ChunksController {
 private:
@@ -17,6 +18,7 @@ private:
 	Lighting* lighting;
 	int64_t avgDurationMcs = 1000;
 	uint padding;
+	WorldGenerator* generator;
 public:
 	ChunksController(Level* level, Chunks* chunks, Lighting* lighting, uint padding);
 	~ChunksController();
diff --git a/src/voxels/WorldGenerator.cpp b/src/voxels/WorldGenerator.cpp
index e6b0e088..8ba1b677 100644
--- a/src/voxels/WorldGenerator.cpp
+++ b/src/voxels/WorldGenerator.cpp
@@ -1,6 +1,7 @@
 #include "WorldGenerator.h"
 #include "voxel.h"
 #include "Chunk.h"
+#include "Block.h"
 
 #include <iostream>
 #include <time.h>
@@ -11,8 +12,9 @@
 #define FNL_IMPL
 #include "../maths/FastNoiseLite.h"
 
-#include "../definitions.h"
+#include "../content/Content.h"
 #include "../maths/voxmaths.h"
+#include "../core_defs.h"
 
 #define SEA_LEVEL 55
 
@@ -94,6 +96,19 @@ float calc_height(fnl_state *noise, int real_x, int real_z){
 	return height;
 }
 
+WorldGenerator::WorldGenerator(const Content* content)
+	           : idStone(content->require("base:stone")->id),
+			     idDirt(content->require("base:dirt")->id),
+				 idGrassBlock(content->require("base:grass_block")->id),
+				 idSand(content->require("base:sand")->id),
+				 idWater(content->require("base:water")->id),
+				 idWood(content->require("base:wood")->id),
+				 idLeaves(content->require("base:leaves")->id),
+				 idGrass(content->require("base:grass")->id),
+				 idFlower(content->require("base:flower")->id),
+				 idBedrock(content->require("base:bedrock")->id) {;
+}
+
 int generate_tree(fnl_state *noise, 
 				  PseudoRandom* random, 
 				  Map2D& heights, 
@@ -179,14 +194,14 @@ void WorldGenerator::generate(voxel* voxels, int cx, int cz, int seed){
 
 			for (int y = 0; y < CHUNK_H; y++){
 				int real_y = y;
-				int id = real_y < SEA_LEVEL ? BLOCK_WATER : BLOCK_AIR;
+				int id = real_y < SEA_LEVEL ? idWater : BLOCK_AIR;
 				int states = 0;
 				if ((real_y == (int)height) && (SEA_LEVEL-2 < real_y)) {
-					id = BLOCK_GRASS_BLOCK;
+					id = idGrassBlock;
 				} else if (real_y < (height - 6)){
-					id = BLOCK_STONE;
+					id = idStone;
 				} else if (real_y < height){
-					id = BLOCK_DIRT;
+					id = idDirt;
 				} else {
 					int tree = generate_tree(&noise, &randomtree, heights, humidity, real_x, real_y, real_z, treesTile);
 					if (tree) {
@@ -195,20 +210,20 @@ void WorldGenerator::generate(voxel* voxels, int cx, int cz, int seed){
 					}
 				}
 				if (((height - (1.5 - 0.2 * pow(height - 54, 4))) < real_y) && (real_y < height) && humidity.get(real_x, real_z) < 0.1){
-					id = BLOCK_SAND;
+					id = idSand;
 				}
 				if (real_y <= 2)
-					id = BLOCK_BEDROCK;
+					id = idBedrock;
 
 				randomgrass.setSeed(real_x,real_z);
 				if ((id == 0) && (height > SEA_LEVEL+0.5) && ((int)(height + 1) == real_y) && ((unsigned short)randomgrass.rand() > 56000)){
-					id = BLOCK_GRASS;
+					id = idGrass;
 				}
 				if ((id == 0) && (height > SEA_LEVEL+0.5) && ((int)(height + 1) == real_y) && ((unsigned short)randomgrass.rand() > 65000)){
-					id = BLOCK_FLOWER;
+					id = idFlower;
 				}
 				if ((height > SEA_LEVEL+1) && ((int)(height + 1) == real_y) && ((unsigned short)randomgrass.rand() > 65533)){
-					id = BLOCK_WOOD;
+					id = idWood;
 					states = BLOCK_DIR_Y;
 				}
 				voxels[(y * CHUNK_D + z) * CHUNK_W + x].id = id;
diff --git a/src/voxels/WorldGenerator.h b/src/voxels/WorldGenerator.h
index 0b910441..f5aa82fa 100644
--- a/src/voxels/WorldGenerator.h
+++ b/src/voxels/WorldGenerator.h
@@ -1,11 +1,25 @@
 #ifndef VOXELS_WORLDGENERATOR_H_
 #define VOXELS_WORLDGENERATOR_H_
 
+#include "../typedefs.h"
+
 class voxel;
+class Content;
 
 class WorldGenerator {
+	blockid_t const idStone;
+	blockid_t const idDirt;
+	blockid_t const idGrassBlock;
+	blockid_t const idSand;
+	blockid_t const idWater;
+	blockid_t const idWood;
+	blockid_t const idLeaves;
+	blockid_t const idGrass;
+	blockid_t const idFlower;
+	blockid_t const idBedrock;
 public:
-	static void generate(voxel* voxels, int x, int z, int seed);
+	WorldGenerator(const Content* content);
+	void generate(voxel* voxels, int x, int z, int seed);
 };
 
 #endif /* VOXELS_WORLDGENERATOR_H_ */
diff --git a/src/world/Level.cpp b/src/world/Level.cpp
index 293eda3f..35743542 100644
--- a/src/world/Level.cpp
+++ b/src/world/Level.cpp
@@ -1,6 +1,7 @@
 #include "Level.h"
 #include "World.h"
 #include "LevelEvents.h"
+#include "../content/Content.h"
 #include "../lighting/Lighting.h"
 #include "../voxels/Chunk.h"
 #include "../voxels/Chunks.h"
@@ -11,8 +12,10 @@
 #include "../objects/Player.h"
 #include "../objects/player_control.h"
 
-Level::Level(World* world, Player* player, EngineSettings& settings)
+Level::Level(World* world, const Content* content, Player* player, EngineSettings& settings)
 	  : world(world),
+	    content(content),
+		contentIds(content->indices),
 		player(player),
 		chunksStorage(new ChunksStorage(this)),
 		events(new LevelEvents()) ,
@@ -24,8 +27,9 @@ Level::Level(World* world, Player* player, EngineSettings& settings)
     chunks = new Chunks(matrixSize, matrixSize, 
 		0, 0, 
 		world->wfile, 
-		events);
-	lighting = new Lighting(chunks);
+		events,
+		content);
+	lighting = new Lighting(content, chunks);
 	chunksController = new ChunksController(this, chunks, lighting, 
 											settings.chunks.padding);
 	playerController = new PlayerController(this, settings);
diff --git a/src/world/Level.h b/src/world/Level.h
index 1ba0b9d1..084b9cd3 100644
--- a/src/world/Level.h
+++ b/src/world/Level.h
@@ -4,6 +4,8 @@
 #include "../typedefs.h"
 #include "../settings.h"
 
+class Content;
+class ContentIndices;
 class World;
 class Player;
 class Chunks;
@@ -17,6 +19,8 @@ class PlayerController;
 class Level {
 public:
 	World* world;
+	const Content* const content;
+	const ContentIndices* const contentIds;
 	Player* player;
 	Chunks* chunks;
 	ChunksStorage* chunksStorage;
@@ -28,6 +32,7 @@ public:
 	const EngineSettings& settings;
 
 	Level(World* world, 
+		  const Content* content,
 	      Player* player, 
 	      EngineSettings& settings);
 	~Level();
diff --git a/src/world/World.cpp b/src/world/World.cpp
index e240fd85..23db425d 100644
--- a/src/world/World.cpp
+++ b/src/world/World.cpp
@@ -42,7 +42,7 @@ void World::write(Level* level, bool writeChunks) {
 	wfile->writePlayer(level->player);
 }
 
-Level* World::load(EngineSettings& settings) {
+Level* World::load(EngineSettings& settings, const Content* content) {
 	WorldInfo info {name, wfile->directory, seed};
 	wfile->readWorldInfo(info);
 	seed = info.seed;
@@ -51,7 +51,7 @@ Level* World::load(EngineSettings& settings) {
 	vec3 playerPosition = vec3(0, 100, 0);
 	Camera* camera = new Camera(playerPosition, glm::radians(90.0f));
 	Player* player = new Player(playerPosition, 4.0f, camera);
-	Level* level = new Level(this, player, settings);
+	Level* level = new Level(this, content, player, settings);
 	wfile->readPlayer(player);
 
 	camera->rotation = mat4(1.0f);
diff --git a/src/world/World.h b/src/world/World.h
index c2d12694..d5d63f7c 100644
--- a/src/world/World.h
+++ b/src/world/World.h
@@ -6,6 +6,7 @@
 #include "../typedefs.h"
 #include "../settings.h"
 
+class Content;
 class WorldFiles;
 class Chunks;
 class Level;
@@ -24,7 +25,7 @@ public:
 	~World();
 
 	void write(Level* level, bool writeChunks);
-	Level* load(EngineSettings& settings);
+	Level* load(EngineSettings& settings, const Content* content);
 };
 
 #endif /* WORLD_WORLD_H_ */
\ No newline at end of file