diff --git a/doc/en/scripting/builtins/libhud.md b/doc/en/scripting/builtins/libhud.md
index b823ab50..4beb5d93 100644
--- a/doc/en/scripting/builtins/libhud.md
+++ b/doc/en/scripting/builtins/libhud.md
@@ -7,7 +7,11 @@ hud.open_inventory()
 -- Close inventory.
 hud.close_inventory()
 
--- Open block UI and inventory. 
+-- Open UI and inventory.
+-- Throws an exception if has no UI layout.
+hud.open(invid: int, layoutid: str)
+
+-- Open block UI and inventory.
 -- Throws an exception if block has no UI layout.
 -- Returns block inventory ID (if *"inventory-size"=0* a virtual 
 -- inventory will be created), and UI layout ID.
diff --git a/doc/en/scripting/builtins/libinventory.md b/doc/en/scripting/builtins/libinventory.md
index a719878a..344840f1 100644
--- a/doc/en/scripting/builtins/libinventory.md
+++ b/doc/en/scripting/builtins/libinventory.md
@@ -40,12 +40,18 @@ inventory.bind_block(invid: int, x: int, y: int, z: int)
 
 -- Unbind inventory from the specified block.
 inventory.unbind_block(x: int, y: int, z: int)
+
+-- Remove inventory.
+inventory.remove(invid: int)
 ```
 
 > [!WARNING]
 > Unbound inventories will be deleted on world close.
 
 ```lua
+-- Create inventory. Returns the created ID.
+inventory.create(size: int) -> int
+
 -- Create inventory copy. Returns the created copy ID.
 inventory.clone(invid: int) -> int
 
diff --git a/doc/ru/scripting/builtins/libhud.md b/doc/ru/scripting/builtins/libhud.md
index cba34dee..ae5a69c3 100644
--- a/doc/ru/scripting/builtins/libhud.md
+++ b/doc/ru/scripting/builtins/libhud.md
@@ -7,7 +7,11 @@ hud.open_inventory()
 -- Закрывает инвентарь.
 hud.close_inventory()
 
--- Открывает инвентарь и UI блока. 
+-- Открывает инвентарь и UI.
+-- Если не имеет макета UI - бросается исключение.
+hud.open(invid: int, layoutid: str)
+
+-- Открывает инвентарь и UI блока.
 -- Если блок не имеет макета UI - бросается исключение.
 -- Возвращает id инвентаря блока 
 -- (при *"inventory-size"=0* создаётся виртуальный инвентарь, 
diff --git a/doc/ru/scripting/builtins/libinventory.md b/doc/ru/scripting/builtins/libinventory.md
index 4d937358..01ecc5cc 100644
--- a/doc/ru/scripting/builtins/libinventory.md
+++ b/doc/ru/scripting/builtins/libinventory.md
@@ -23,7 +23,7 @@ inventory.set(
     count: int
 )
 
--- Возращает размер инвентаря (число слотов). 
+-- Возвращает размер инвентаря (число слотов).
 -- Если указанного инвентаря не существует, бросает исключение.
 inventory.size(invid: int) -> int
 
@@ -47,13 +47,19 @@ inventory.bind_block(invid: int, x: int, y: int, z: int)
 
 -- Отвязывает инвентарь от блока.
 inventory.unbind_block(x: int, y: int, z: int)
+
+-- Удаляет инвентарь.
+inventory.remove(invid: int)
 ```
 
 > [!WARNING]
 > Инвентари, не привязанные ни к одному из блоков, удаляются при выходе из мира.
 
 ```lua
--- Создает копию инвентаря и возвращает id копии. 
+-- Создаёт инвентарь и возвращает id.
+inventory.create(size: int) -> int
+
+-- Создает копию инвентаря и возвращает id копии.
 -- Если копируемого инвентаря не существует, возвращает 0.
 inventory.clone(invid: int) -> int
 
@@ -62,5 +68,3 @@ inventory.clone(invid: int) -> int
 -- slotB будет выбран автоматически, если не указывать явно.
 inventory.move(invA: int, slotA: int, invB: int, slotB: int)
 ```
-
-
diff --git a/src/frontend/hud.cpp b/src/frontend/hud.cpp
index 0063fd46..fd418d0f 100644
--- a/src/frontend/hud.cpp
+++ b/src/frontend/hud.cpp
@@ -388,6 +388,39 @@ void Hud::openInventory() {
     add(HudElement(hud_element_mode::inventory_bound, nullptr, exchangeSlot, false));
 }
 
+void Hud::openInventory(
+    UiDocument* doc,
+    std::shared_ptr<Inventory> inv,
+    bool playerInventory
+) {
+    if (inv == nullptr) {
+        // why try to open nox-existent inventory??
+        return;
+    }
+
+    if (isInventoryOpen()) {
+        closeInventory();
+    }
+    auto level = frontend->getLevel();
+    auto content = level->content;
+    secondInvView = std::dynamic_pointer_cast<InventoryView>(doc->getRoot());
+    if (secondInvView == nullptr) {
+        throw std::runtime_error("secondary UI root element must be 'inventory'");
+    }
+    secondUI = secondInvView;
+
+    if (playerInventory) {
+        openInventory();
+    } else {
+        inventoryOpen = true;
+    }
+    if (inv == nullptr) {
+        inv = level->inventories->createVirtual(secondInvView->getSlotsCount());
+    }
+    secondInvView->bind(inv, content);
+    add(HudElement(hud_element_mode::inventory_bound, doc, secondUI, false));
+}
+
 void Hud::openInventory(
     glm::ivec3 block, 
     UiDocument* doc, 
diff --git a/src/frontend/hud.hpp b/src/frontend/hud.hpp
index 775681af..b184ddfc 100644
--- a/src/frontend/hud.hpp
+++ b/src/frontend/hud.hpp
@@ -102,6 +102,8 @@ class Hud : public util::ObjectsKeeper {
     std::shared_ptr<gui::InventoryView> inventoryView = nullptr;
     /// @brief Block inventory view
     std::shared_ptr<gui::InventoryView> blockUI = nullptr;
+    /// @brief Secondary inventory view
+    std::shared_ptr<gui::InventoryView> secondInvView = nullptr;
     /// @brief Position of the block open
     glm::ivec3 blockPos {};
     /// @brief Id of the block open (used to detect block destruction or replacement)
@@ -145,6 +147,16 @@ public:
 
     /// @brief Show player inventory in inventory-mode
     void openInventory();
+
+    /// @brief Show inventory in inventory-mode
+    /// @param doc ui layout
+    /// @param inv inventory
+    /// @param playerInventory show player inventory too
+    void openInventory(
+        UiDocument* doc,
+        std::shared_ptr<Inventory> inv,
+        bool playerInventory
+    );
     
     /// @brief Show block inventory in inventory-mode
     /// @param block block position
diff --git a/src/logic/scripting/lua/libs/libhud.cpp b/src/logic/scripting/lua/libs/libhud.cpp
index 5df2e08c..17e1211a 100644
--- a/src/logic/scripting/lua/libs/libhud.cpp
+++ b/src/logic/scripting/lua/libs/libhud.cpp
@@ -36,6 +36,26 @@ static int l_close_inventory(lua::State*) {
     return 0;
 }
 
+static int l_open(lua::State* L) {
+    auto invid = lua::tointeger(L, 1);
+    auto layoutid = lua::require_string(L, 2);
+    bool playerInventory = !lua::toboolean(L, 3);
+
+    auto assets = engine->getAssets();
+    auto layout = assets->get<UiDocument>(layoutid);
+    if (layout == nullptr) {
+        throw std::runtime_error("there is no ui layout " + util::quote(layoutid));
+    }
+
+    hud->openInventory(
+        layout,
+        level->inventories->get(invid),
+        playerInventory
+    );
+
+    return 0;
+}
+
 static int l_open_block(lua::State* L) {
     auto x = lua::tointeger(L, 1);
     auto y = lua::tointeger(L, 2);
@@ -154,6 +174,7 @@ static int l_set_debug_cheats(lua::State* L) {
 const luaL_Reg hudlib[] = {
     {"open_inventory", lua::wrap<l_open_inventory>},
     {"close_inventory", lua::wrap<l_close_inventory>},
+    {"open", lua::wrap<l_open>},
     {"open_block", lua::wrap<l_open_block>},
     {"open_permanent", lua::wrap<l_open_permanent>},
     {"show_overlay", lua::wrap<l_show_overlay>},
diff --git a/src/logic/scripting/lua/libs/libinventory.cpp b/src/logic/scripting/lua/libs/libinventory.cpp
index bc5abd47..a705c48b 100644
--- a/src/logic/scripting/lua/libs/libinventory.cpp
+++ b/src/logic/scripting/lua/libs/libinventory.cpp
@@ -109,6 +109,26 @@ static int l_inventory_unbind_block(lua::State* L) {
     return 0;
 }
 
+static int l_inventory_create(lua::State* L) {
+    auto invsize = lua::tointeger(L, 1);
+    auto inv = level->inventories->create(invsize);
+    if (inv == nullptr) {
+        return lua::pushinteger(L, 0);
+    }
+    return lua::pushinteger(L, inv->getId());
+}
+
+static int l_inventory_remove(lua::State* L) {
+    auto invid = lua::tointeger(L, 1);
+    auto inv = get_inventory(invid);
+    if (inv == nullptr) {
+        return 0;
+    }
+
+    level->inventories->remove(invid);
+    return 0;
+}
+
 static int l_inventory_clone(lua::State* L) {
     auto id = lua::tointeger(L, 1);
     auto clone = level->inventories->clone(id);
@@ -145,5 +165,7 @@ const luaL_Reg inventorylib[] = {
     {"get_block", lua::wrap<l_inventory_get_block>},
     {"bind_block", lua::wrap<l_inventory_bind_block>},
     {"unbind_block", lua::wrap<l_inventory_unbind_block>},
+    {"create", lua::wrap<l_inventory_create>},
+    {"remove", lua::wrap<l_inventory_remove>},
     {"clone", lua::wrap<l_inventory_clone>},
     {NULL, NULL}};
diff --git a/src/voxels/Chunk.cpp b/src/voxels/Chunk.cpp
index 6cbab94c..a32fc8ba 100644
--- a/src/voxels/Chunk.cpp
+++ b/src/voxels/Chunk.cpp
@@ -13,7 +13,7 @@ Chunk::Chunk(int xpos, int zpos) : x(xpos), z(zpos) {
     top = CHUNK_H;
 }
 
-bool Chunk::isEmpty() {
+bool Chunk::isEmpty() const {
     int id = -1;
     for (uint i = 0; i < CHUNK_VOL; i++) {
         if (voxels[i].id != id) {
diff --git a/src/voxels/Chunk.hpp b/src/voxels/Chunk.hpp
index 1b426c37..94011d40 100644
--- a/src/voxels/Chunk.hpp
+++ b/src/voxels/Chunk.hpp
@@ -44,7 +44,7 @@ public:
 
     Chunk(int x, int z);
 
-    bool isEmpty();
+    bool isEmpty() const;
 
     void updateHeights();
 
diff --git a/src/window/Window.cpp b/src/window/Window.cpp
index 2de948a3..d095778b 100644
--- a/src/window/Window.cpp
+++ b/src/window/Window.cpp
@@ -72,11 +72,9 @@ bool Window::isFocused() {
 
 void window_size_callback(GLFWwindow*, int width, int height) {
     if (width && height) {
-        if (Window::isFocused()) {
-            glViewport(0, 0, width, height);
-            Window::width = width;
-            Window::height = height;
-        }
+        glViewport(0, 0, width, height);
+        Window::width = width;
+        Window::height = height;
 
         if (!Window::isFullscreen() && !Window::isMaximized()) {
             Window::getSettings()->width.set(width);