diff --git a/src/frontend/hud.cpp b/src/frontend/hud.cpp
index d6cdc984..49305281 100644
--- a/src/frontend/hud.cpp
+++ b/src/frontend/hud.cpp
@@ -51,6 +51,14 @@
 #include "../items/Inventories.h"
 #include "../logic/scripting/scripting.h"
 
+
+// implemented in debug_panel.cpp
+extern std::shared_ptr<gui::UINode> create_debug_panel(
+    Engine* engine, 
+    Level* level, 
+    Player* player
+);
+
 HudElement::HudElement(
     hud_element_mode mode, 
     UiDocument* document, 
@@ -130,12 +138,6 @@ std::shared_ptr<InventoryView> Hud::createHotbar() {
     return view;
 }
 
-extern std::shared_ptr<gui::UINode> create_debug_panel(
-    Engine* engine, 
-    Level* level, 
-    Player* player
-);
-
 Hud::Hud(Engine* engine, LevelFrontend* frontend, Player* player) 
   : engine(engine),
     assets(engine->getAssets()), 
@@ -320,6 +322,7 @@ void Hud::openInventory(
     if (blockUI == nullptr) {
         throw std::runtime_error("block UI root element must be 'inventory'");
     }
+    secondUI = blockUI;
     if (playerInventory) {
         openInventory();
     } else {
@@ -334,7 +337,20 @@ void Hud::openInventory(
     currentblockid = level->chunks->get(block.x, block.y, block.z)->id;
     add(HudElement(hud_element_mode::inventory_bound, doc, blockUI, false));
 }
- 
+
+void Hud::showOverlay(UiDocument* doc, bool playerInventory) {
+    if (isInventoryOpen()) {
+        closeInventory();
+    }
+    secondUI = doc->getRoot();
+    if (playerInventory) {
+        openInventory();
+    } else {
+        inventoryOpen = true;
+    }
+    add(HudElement(hud_element_mode::inventory_bound, doc, secondUI, false));
+}
+
 /// @brief Add element as permanent overlay
 /// @param doc element layout document
 void Hud::openPermanent(UiDocument* doc) {
@@ -365,6 +381,7 @@ void Hud::closeInventory() {
         }
         blockUI = nullptr;
     }
+    secondUI = nullptr;
 }
 
 void Hud::add(HudElement element) {
@@ -471,7 +488,7 @@ void Hud::draw(const GfxContext& ctx){
         contentAccessPanel->setCoord(glm::vec2(width-caWidth, 0));
 
         glm::vec2 invSize = inventoryView ? inventoryView->getSize() : glm::vec2();
-        if (blockUI == nullptr) {
+        if (secondUI == nullptr) {
             if (inventoryView) {
                 inventoryView->setCoord(glm::vec2(
                     glm::min(width/2-invSize.x/2, width-caWidth-10-invSize.x),
@@ -479,7 +496,7 @@ void Hud::draw(const GfxContext& ctx){
                 ));
             }
         } else {
-            glm::vec2 blockInvSize = blockUI->getSize();
+            glm::vec2 blockInvSize = secondUI->getSize();
             float invwidth = glm::max(invSize.x, blockInvSize.x);
             int interval = invSize.y > 0.0 ? 5 : 0;
             float totalHeight = invSize.y + blockInvSize.y + interval;
@@ -489,7 +506,7 @@ void Hud::draw(const GfxContext& ctx){
                     height/2+totalHeight/2-invSize.y
                 ));
             }
-            blockUI->setCoord(glm::vec2(
+            secondUI->setCoord(glm::vec2(
                 glm::min(width/2-invwidth/2, width-caWidth-10-invwidth),
                 height/2-totalHeight/2
             ));
diff --git a/src/frontend/hud.h b/src/frontend/hud.h
index 3940f0fb..1cae1c5c 100644
--- a/src/frontend/hud.h
+++ b/src/frontend/hud.h
@@ -70,22 +70,39 @@ class Hud {
     LevelFrontend* frontend;
     Player* player;
 
+    /// @brief Is any overlay/inventory open
     bool inventoryOpen = false;
+    /// @brief Is pause mode on
     bool pause = false;
 
+    /// @brief Content access panel scroll container
     std::shared_ptr<gui::Container> contentAccessPanel;
+    /// @brief Content access panel itself
     std::shared_ptr<InventoryView> contentAccess;
+    /// @brief Player inventory hotbar
     std::shared_ptr<InventoryView> hotbarView;
+    /// @brief Debug info and control panel (F3 key)
     std::shared_ptr<gui::UINode> debugPanel;
+    /// @brief Overlay used in pause mode
     std::shared_ptr<gui::Panel> darkOverlay;
+    /// @brief Inventories interaction agent (grabbed item and other info)
     std::unique_ptr<InventoryInteraction> interaction;
+    /// @brief Grabbed item visual element
     std::shared_ptr<SlotView> grabbedItemView;
+    /// @brief List of all controlled hud elements
     std::vector<HudElement> elements;
 
+    /// @brief Player inventory view
     std::shared_ptr<InventoryView> inventoryView = nullptr;
+    /// @brief Block inventory view
     std::shared_ptr<InventoryView> blockUI = nullptr;
+    /// @brief Position of the block open
     glm::ivec3 currentblock {};
+    /// @brief Id of the block open (used to detect block destruction or replacement)
     blockid_t currentblockid = 0;
+
+    /// @brief UI element will be dynamicly positioned near to inventory or in screen center
+    std::shared_ptr<gui::UINode> secondUI = nullptr;
     
     std::shared_ptr<InventoryView> createContentAccess();
     std::shared_ptr<InventoryView> createHotbar();
@@ -98,13 +115,35 @@ public:
     void update(bool hudVisible);
     void draw(const GfxContext& context);
 
+    /// @brief Check if inventory mode on
     bool isInventoryOpen() const;
+
+    /// @brief Check if pause mode on
     bool isPause() const;
+
+    /// @brief Enable/disable pause mode
     void setPause(bool pause);
 
+    /// @brief Show player inventory in inventory-mode
     void openInventory();
+    
+    /// @brief Show block inventory in inventory-mode
+    /// @param block block position
+    /// @param doc block ui layout
+    /// @param blockInv block inventory
+    /// @param playerInventory show player inventory too
     void openInventory(glm::ivec3 block, UiDocument* doc, std::shared_ptr<Inventory> blockInv, bool playerInventory);
+
+    /// @brief Show element in inventory-mode
+    /// @param doc element layout
+    /// @param playerInventory show player inventory too
+    void showOverlay(UiDocument* doc, bool playerInventory);
+
+    /// @brief Close all open inventories and overlay
     void closeInventory();
+
+    /// @brief Add element will be visible until removed
+    /// @param doc element layout
     void openPermanent(UiDocument* doc);
 
     void add(HudElement element);
@@ -114,4 +153,4 @@ public:
     Player* getPlayer() const;
 };
 
-#endif /* SRC_HUD_H_ */
+#endif // SRC_HUD_H_
diff --git a/src/logic/scripting/lua/libhud.cpp b/src/logic/scripting/lua/libhud.cpp
index 85567d75..971b4931 100644
--- a/src/logic/scripting/lua/libhud.cpp
+++ b/src/logic/scripting/lua/libhud.cpp
@@ -65,6 +65,19 @@ static int l_hud_open_block(lua_State* L) {
     return 2;
 }
 
+static int l_hud_show_overlay(lua_State* L) {
+    const char* name = lua_tostring(L, 1);
+    bool playerInventory = lua_toboolean(L, 2);
+
+    auto assets = scripting::engine->getAssets();
+    auto layout = assets->getLayout(name);
+    if (layout == nullptr) {
+        luaL_error(L, "there is no ui layout '%s'", name);
+    }
+    scripting::hud->showOverlay(layout, playerInventory);
+    return 0;
+}
+
 static UiDocument* require_layout(lua_State* L, const char* name) {
     auto assets = scripting::engine->getAssets();
     auto layout = assets->getLayout(name);
@@ -91,6 +104,7 @@ const luaL_Reg hudlib [] = {
     {"close_inventory", lua_wrap_errors<l_hud_close_inventory>},
     {"open_block", lua_wrap_errors<l_hud_open_block>},
     {"open_permanent", lua_wrap_errors<l_hud_open_permanent>},
+    {"show_overlay", lua_wrap_errors<l_hud_show_overlay>},
     {"close", lua_wrap_errors<l_hud_close>},
     {NULL, NULL}
 };