diff --git a/res/layouts/pages/content.xml b/res/layouts/pages/content.xml
index c4ff39e2..37025c69 100644
--- a/res/layouts/pages/content.xml
+++ b/res/layouts/pages/content.xml
@@ -1,13 +1,41 @@
-<container size='887,454' color='#0F1E2DB2' padding='8' interval='5' context='menu'>
-    <panel id='packs_cur' pos='2' size='440,406' color='0' max-length='406'>
-        <!-- content is generated in script -->
-    </panel>
-    <panel id='packs_add' pos='445,2' size='440,406' color='0' max-length='406'>
-        <!-- content is generated in script -->
-    </panel>
-    <button id='apply_btn' pos='2,410' size='440,40' onclick='apply()'>@Apply</button>
-    <button pos='445,410' size='398,40' onclick='menu:back()'>@Cancel</button>
-    <image onclick='refresh()' interactive='true' src='gui/refresh' 
-        size='32' margin='7' gravity='bottom-right'
-        color='#FFFFFF80' hover-color='#FFFFFF10'/>
-</container>
+
+<container size='940,600' color='#0F1E2DB2' interval='5' context='menu'>  
+    <button pos='15,545' id='apply_btn' size='440,40' onclick='apply()'>@Apply</button>  
+    <button pos='485,545' size='440,40' onclick='menu:back()'>@Cancel</button>  
+
+    <image id="move_left" src='gui/check_mark'   
+        size='32' margin='218,2,0,0' gravity='top-left'  
+        color='#FFFFFF50'/>  
+
+    <image id="move_left" src='gui/cross'   
+        size='32' margin='0,2,219,0' gravity='top-right'  
+        color='#FFFFFF50'/>  
+
+    <panel id='search_panel' size='440,36' pos='15,504' interval='1' color='#0000004C'>  
+        <textbox id='search_textbox' multiline='false' size='440,25' sub-consumer='function(x) refresh_search() end'></textbox>  
+    </panel>  
+  
+    <image onclick='core.open_folder("user:content")' interactive='true' src='gui/folder_icon'   
+        size='32' margin='0,0,18,66' gravity='bottom-right'  
+        color='#FFFFFF50' hover-color='#FFFFFF10'/>  
+  
+    <image onclick='refresh()' interactive='true' src='gui/refresh'   
+        size='32' margin='0,0,65,66' gravity='bottom-right'  
+        color='#FFFFFF80' hover-color='#FFFFFF10'/>  
+  
+    <image id="move_right" onclick='move_right()' interactive='true' src='gui/right_arrow'   
+        size='32' margin='0,0,380,64' gravity='bottom-right'  
+        color='#FFFFFF50' hover-color='#FFFFFF10'/>  
+  
+    <image id="move_left" onclick='move_left()' interactive='true' src='gui/left_arrow'   
+        size='32' margin='0,0,425,64' gravity='bottom-right'  
+        color='#FFFFFF50' hover-color='#FFFFFF10'/>  
+  
+    <panel id='packs_add' pos='485,34' size='440,507' color='0' max-length='455' scrollable='true'>  
+        <!-- content is generated in script -->  
+    </panel>  
+  
+    <panel id='packs_cur' pos='15,34' size='440,507' color='0' max-length='455' scrollable='true'>  
+        <!-- content is generated in script -->  
+    </panel>  
+</container>
\ No newline at end of file
diff --git a/res/layouts/pages/content.xml.lua b/res/layouts/pages/content.xml.lua
index 0eae8c00..3f1903f3 100644
--- a/res/layouts/pages/content.xml.lua
+++ b/res/layouts/pages/content.xml.lua
@@ -5,9 +5,28 @@ function on_open(params)
     refresh()
 end
 
+-- add - packs to be added to the world (after apply)
+-- rem - packs that should be removed from the world (after apply)
 add_packs = {}
 rem_packs = {}
 
+-- included - connected packs to the world
+-- excluded - packs that are not connected to the world
+packs_included = {}
+packs_excluded = {}
+
+packs_info = {}
+
+local function include(id, is_include)
+    if is_include then
+        table.insert(packs_included, id)
+        table.remove_value(packs_excluded, id)
+    else
+        table.insert(packs_excluded, id)
+        table.remove_value(packs_included, id)
+    end
+end
+
 function apply()
     core.reconfig_packs(add_packs, rem_packs)
     if mode ~= "world" then
@@ -15,8 +34,70 @@ function apply()
     end
 end
 
+function reposition_func(_pack)
+    local INTERVAL = 2
+    local STEP = 1
+    local SIZE = 80
+
+    local tbl = nil
+    if table.has(packs_included, _pack) then
+        tbl = packs_included
+    elseif table.has(packs_excluded, _pack) then
+        tbl = packs_excluded
+    else
+        tbl = packs_excluded
+        local packinfo = pack.get_info(_pack)
+        packinfo[packinfo.id] = {packinfo.id, packinfo.title}
+        table.insert(packs_excluded, packinfo.id)
+    end
+
+    local indx = table.index(tbl, _pack) - 1
+    local pos = {0, (SIZE + INTERVAL) * indx + STEP}
+
+    return pos[1], pos[2]
+end
+
+
+function refresh_search()
+    local search_text = document.search_textbox.text:lower()
+
+    local new_included = table.copy(packs_included)
+    local new_excluded = table.copy(packs_excluded)
+
+    local function score(pack_name)
+        if pack_name:lower():find(search_text) then
+            return 1
+        end
+        return 0
+    end
+
+    local function sorting(a, b)
+        local score_a = score(packs_info[a][2])
+        local score_b = score(packs_info[b][2])
+
+        if score_a ~= score_b then
+            return score_a > score_b
+        else
+            return packs_info[a][2] < packs_info[b][2]
+        end
+    end
+
+    table.sort(new_included, sorting)
+    table.sort(new_excluded, sorting)
+
+    packs_included = new_included
+    packs_excluded = new_excluded
+
+    for _, id in ipairs(table.merge(table.copy(packs_included), packs_excluded)) do
+        local content = document["pack_" .. id]
+        content:reposition()
+    end
+end
+
+
 function refresh_changes()
     document.apply_btn.enabled = (#add_packs>0) or (#rem_packs>0)
+    refresh_search()
 end
 
 function move_pack(id)
@@ -24,23 +105,61 @@ function move_pack(id)
     if table.has(add_packs, id) then
         document["pack_"..id]:moveInto(document.packs_add)
         table.remove_value(add_packs, id)
+        include(id, false)
     -- cancel pack removal
     elseif table.has(rem_packs, id) then
         document["pack_"..id]:moveInto(document.packs_cur)
         table.remove_value(rem_packs, id)
+        include(id, true)
     -- add pack
     elseif table.has(packs_installed, id) then
         document["pack_"..id]:moveInto(document.packs_add)
         table.insert(rem_packs, id)
+        include(id, false)
     -- remove pack
     else
         document["pack_"..id]:moveInto(document.packs_cur)
         table.insert(add_packs, id)
+        include(id, true)
     end
     refresh_changes()
 end
 
-function place_pack(panel, packinfo, callback)
+function move_left()
+    for _, id in pairs(table.copy(packs_excluded)) do
+        if not document["pack_"..id].enabled then goto continue end
+
+        include(id, true)
+        table.insert(add_packs, id)
+        table.remove_value(rem_packs, id)
+        document["pack_"..id]:moveInto(document.packs_cur)
+
+        ::continue::
+    end
+
+    refresh_changes()
+end
+
+function move_right()
+    for _, id in pairs(table.copy(packs_included)) do
+        if not document["pack_"..id].enabled then goto continue end
+
+        include(id, false)
+
+        if table.has(packs_installed, id) then
+            table.insert(rem_packs, id)
+        end
+
+        table.remove_value(add_packs, id)
+        document["pack_"..id]:moveInto(document.packs_add)
+
+        ::continue::
+    end
+
+    refresh_changes()
+end
+
+function place_pack(panel, packinfo, callback, position_func)
     if packinfo.error then
         callback = nil
     end
@@ -50,6 +169,7 @@ function place_pack(panel, packinfo, callback)
         packinfo.id_verbose = packinfo.id
     end
     packinfo.callback = callback
+    packinfo.position_func = position_func or function () end
     panel:add(gui.template("pack", packinfo))
     if not callback then
         document["pack_"..packinfo.id].enabled = false
@@ -76,15 +196,30 @@ function check_dependencies(packinfo)
     return
 end
 
+function check_deleted()
+    for i = 1, math.max(#packs_included, #packs_excluded) do
+        local pack = packs_included[i]
+        if pack and not table.has(packs_all, pack) then
+            table.remove(packs_included, i)
+            table.insert(rem_packs, pack)
+        end
+
+        pack = packs_excluded[i]
+        if pack and not table.has(packs_all, pack) then
+            table.remove(packs_excluded, i)
+            table.insert(rem_packs, pack)
+        end
+    end
+end
+
 function refresh()
     packs_installed = pack.get_installed()
     packs_available = pack.get_available()
     base_packs = pack.get_base_packs()
     packs_all = {unpack(packs_installed)}
     required = {}
-    for i,k in ipairs(packs_available) do
-        table.insert(packs_all, k)
-    end
+
+    table.merge(packs_all, packs_available)
 
     local packs_cur = document.packs_cur
     local packs_add = document.packs_add
@@ -105,20 +240,14 @@ function refresh()
     end
     local packinfos = pack.get_info(packids)
 
-    for i,id in ipairs(packs_installed) do
-        local packinfo = packinfos[id]
-        packinfo.index = i
-        callback = not table.has(base_packs, id) and string.format('move_pack("%s")', id) or nil
-        packinfo.error = check_dependencies(packinfo)
-        place_pack(packs_cur, packinfo, callback)
+    for _,id in ipairs(base_packs) do
+        local packinfo = pack.get_info(id)
+        packs_info[id] = {packinfo.id, packinfo.title}
     end
 
-    for i,id in ipairs(packs_available) do
-        local packinfo = packinfos[id]
-        packinfo.index = i
-        callback = string.format('move_pack("%s")', id)
-        packinfo.error = check_dependencies(packinfo)
-        place_pack(packs_add, packinfo, callback)
+    for _,id in ipairs(packs_all) do
+        local packinfo = pack.get_info(id)
+        packs_info[id] = {packinfo.id, packinfo.title}
     end
 
     for i,id in ipairs(packs_installed) do
@@ -127,6 +256,26 @@ function refresh()
         end
     end
 
+    if #packs_excluded == 0 then packs_excluded = table.copy(packs_available) end
+    if #packs_included == 0 then packs_included = table.copy(packs_installed) end
+
+    for i,id in ipairs(packs_installed) do
+        local packinfo = packinfos[id]
+        packinfo.index = i
+        callback = not table.has(base_packs, id) and string.format('move_pack("%s")', id) or nil
+        packinfo.error = check_dependencies(packinfo)
+        place_pack(packs_cur, packinfo, callback, string.format('reposition_func("%s")', packinfo.id))
+    end
+
+    for i,id in ipairs(packs_available) do
+        local packinfo = packinfos[id]
+        packinfo.index = i
+        callback = string.format('move_pack("%s")', id)
+        packinfo.error = check_dependencies(packinfo)
+        place_pack(packs_add, packinfo, callback, string.format('reposition_func("%s")', packinfo.id))
+    end
+
+    check_deleted()
     apply_movements(packs_cur, packs_add)
     refresh_changes()
 end
diff --git a/res/layouts/pages/new_world.xml.lua b/res/layouts/pages/new_world.xml.lua
index 25e6f424..0dafa505 100644
--- a/res/layouts/pages/new_world.xml.lua
+++ b/res/layouts/pages/new_world.xml.lua
@@ -28,7 +28,8 @@ function on_open()
     document.content_btn.text = string.format(
         "%s [%s]", gui.str("Content", "menu"), #pack.get_installed()
     )
-    if settings.generator == nil then
+
+    if settings.generator == nil or generation.get_generators()[settings.generator] == nil then
         settings.generator = generation.get_default_generator()
     end
     document.generator_btn.text = string.format(
diff --git a/res/layouts/templates/pack.xml b/res/layouts/templates/pack.xml
index 5eb2f74c..3b24aa96 100644
--- a/res/layouts/templates/pack.xml
+++ b/res/layouts/templates/pack.xml
@@ -1,4 +1,4 @@
-<container id='pack_%{id}' onclick='%{callback}' size='0,80' color='#00000040' hover-color='#00000080' z-index="%{index}">
+<container id='pack_%{id}' onclick='%{callback}' size='0,80' color='#00000040' hover-color='#00000080' position-func="%{position_func}" z-index="%{index}">
     <label color='#FFFFFF80' size='300,25' align='right' gravity='top-right'>
         [%{id_verbose}]
     </label>
diff --git a/res/preload.json b/res/preload.json
index fb202291..e2369e0c 100644
--- a/res/preload.json
+++ b/res/preload.json
@@ -19,7 +19,10 @@
         "gui/cross",
         "gui/refresh",
         "gui/folder_icon",
-        "gui/settings_icon"
+        "gui/settings_icon",
+        "gui/check_mark",
+        "gui/left_arrow",
+        "gui/right_arrow"
     ],
     "fonts": [
         {
diff --git a/res/textures/gui/check_mark.png b/res/textures/gui/check_mark.png
new file mode 100644
index 00000000..61e61711
Binary files /dev/null and b/res/textures/gui/check_mark.png differ
diff --git a/res/textures/gui/left_arrow.png b/res/textures/gui/left_arrow.png
new file mode 100644
index 00000000..0d719ff2
Binary files /dev/null and b/res/textures/gui/left_arrow.png differ
diff --git a/res/textures/gui/loupe.png b/res/textures/gui/loupe.png
new file mode 100644
index 00000000..1b8a946b
Binary files /dev/null and b/res/textures/gui/loupe.png differ
diff --git a/res/textures/gui/right_arrow.png b/res/textures/gui/right_arrow.png
new file mode 100644
index 00000000..e34208bd
Binary files /dev/null and b/res/textures/gui/right_arrow.png differ