diff --git a/doc/en/scripting/builtins/libworld.md b/doc/en/scripting/builtins/libworld.md
index afd8c240..349e9106 100644
--- a/doc/en/scripting/builtins/libworld.md
+++ b/doc/en/scripting/builtins/libworld.md
@@ -1,6 +1,9 @@
 # *world* library
 
 ```lua
+-- Checks if world is open
+world.is_open() -> bool
+
 -- Returns worlds information.
 world.get_list() -> tables array {
     -- world name
diff --git a/doc/ru/scripting/builtins/libworld.md b/doc/ru/scripting/builtins/libworld.md
index 31806de4..b82f3b53 100644
--- a/doc/ru/scripting/builtins/libworld.md
+++ b/doc/ru/scripting/builtins/libworld.md
@@ -1,6 +1,9 @@
 # Библиотека *world*
 
 ```lua
+-- Проверяет, открыт ли мир
+world.is_open() -> bool
+
 -- Возвращает информацию о мирах.
 world.get_list() -> массив таблиц {
     -- название мира
diff --git a/src/logic/scripting/lua/libs/libworld.cpp b/src/logic/scripting/lua/libs/libworld.cpp
index 04249299..06da877c 100644
--- a/src/logic/scripting/lua/libs/libworld.cpp
+++ b/src/logic/scripting/lua/libs/libworld.cpp
@@ -20,6 +20,10 @@ static WorldInfo& require_world_info() {
     return level->getWorld()->getInfo();
 }
 
+static int l_is_open(lua::State* L) {
+    return lua::pushboolean(L, level != nullptr);
+}
+
 static int l_get_list(lua::State* L) {
     auto paths = engine->getPaths();
     auto worlds = paths->scanForWorlds();
@@ -98,6 +102,7 @@ static int l_get_generator(lua::State* L) {
 }
 
 const luaL_Reg worldlib[] = {
+    {"is_open", lua::wrap<l_is_open>},
     {"get_list", lua::wrap<l_get_list>},
     {"get_total_time", lua::wrap<l_get_total_time>},
     {"get_day_time", lua::wrap<l_get_day_time>},