diff --git a/tetris/Makefile b/tetris/Makefile
index f073fbf..c171338 100644
--- a/tetris/Makefile
+++ b/tetris/Makefile
@@ -5,15 +5,15 @@ UNAME_S := Windows
 CXX = cl
 CXXFLAGS = -MD -EHsc
 OBJEXT = obj
-LDFLAGS = 
+LDFLAGS =
 OUTPUTFLAG = -Fo
 else
 UNAME_S := $(shell uname -s)
 CXX ?= g++
-CXXFLAGS = -std=c++14 -Wall -Wextra -pedantic -O2
+CXXFLAGS = -std=c++14 -Wall -Wextra -pedantic -O2 # -DDEBUG -DFEATURE # -g -fsanitize=address
 OBJEXT = o
 LDFLAGS ?= -lSDL2 -lSDL2_image -lSDL2_gfx -lSDL2_ttf -pthread
-OUTPUTFLAG = -o 
+OUTPUTFLAG = -o
 endif
 
 TETRIS_OBJECTS = tetris.${OBJEXT} scenes.${OBJEXT} config.${OBJEXT} functions.${OBJEXT} global_vars.${OBJEXT} custom_classes.${OBJEXT}
diff --git a/tetris/custom_classes.cpp b/tetris/custom_classes.cpp
index dae80e6..2c5fc5a 100644
--- a/tetris/custom_classes.cpp
+++ b/tetris/custom_classes.cpp
@@ -1,6 +1,9 @@
 #include "custom_classes.hpp"
 
 std::shared_ptr< SDLPP::Texture > TetrisBlock::block_texture = nullptr;
+#ifdef FEATURE
+const std::vector<SDL_Rect> blockanim = {{0,0,125,125}, {125,0,250,125}, {125,125,250,250}, {0,125,125,250}};
+#endif
 
 TetrisBlock::TetrisBlock( double x, double y, double w, double h,
                           const std::shared_ptr< SDLPP::Renderer > &r,
@@ -13,11 +16,19 @@ TetrisBlock::TetrisBlock( double x, double y, double w, double h,
     pieces_bag[_index]--;
     _scene = scene;
     setColors();
-    if ( TetrisBlock::block_texture == nullptr )
+    if ( TetrisBlock::block_texture == nullptr ) {
         TetrisBlock::block_texture =
             std::make_shared< SDLPP::Texture >( renderer, "block.png" );
+        TetrisBlock::block_texture->setAlpha(240);
+    }
     if ( g_show_3d )
+#ifdef FEATURE
+        setTexture( TetrisBlock::block_texture, 0, 0, 125, 125 );
+    setAnimationFrames( blockanim );
+    setAnimationSpeed(4);
+#else
         setTexture( TetrisBlock::block_texture );
+#endif
 }
 
 TetrisBlock::TetrisBlock( const TetrisBlock &other )
@@ -66,7 +77,11 @@ void TetrisBlock::specialAction( int code ) {
         // fallthrough
     case PIECE_ACTION_UPDATE_BLOCK:
         if ( g_show_3d )
-            setTexture( "block.png" );
+#ifdef FEATURE
+            setTexture( TetrisBlock::block_texture, 0, 0, 125, 125 );
+#else
+            setTexture( TetrisBlock::block_texture );
+#endif
         else
             unsetTexture();
     default:
diff --git a/tetris/functions.cpp b/tetris/functions.cpp
index 4a9c497..37f1913 100644
--- a/tetris/functions.cpp
+++ b/tetris/functions.cpp
@@ -101,6 +101,9 @@ check_floor:
                 g_update_scenes.push_back(g_game_over_scene);
                 g_active_scenes.push_back( g_game_over_scene );
                 g_input_functions.push_back( gameOverSceneInput );
+#ifdef FEATURE
+                pauseBlocks();
+#endif
                 break;
             }
         }
@@ -419,6 +422,19 @@ void updateBlocks() {
         x->specialAction( PIECE_ACTION_UPDATE_BLOCK );
     }
 }
+#ifdef FEATURE
+void pauseBlocks() {
+    for ( auto &x : g_main_scene->getObjects( { BRICK_ID, SHADOW_ID } ) ) {
+        x->pauseAnimation();
+    }
+}
+
+void resumeBlocks() {
+    for ( auto &x : g_main_scene->getObjects( { BRICK_ID, SHADOW_ID } ) ) {
+        x->resumeAnimation();
+    }
+}
+#endif
 
 void updateColors() {
     for ( auto &x : g_main_scene->getObjects( { BRICK_ID, SHADOW_ID } ) ) {
diff --git a/tetris/functions.hpp b/tetris/functions.hpp
index 2d8b2ef..0f6f91f 100644
--- a/tetris/functions.hpp
+++ b/tetris/functions.hpp
@@ -35,5 +35,9 @@ tetrisZLeft( std::shared_ptr< SDLPP::Renderer > renderer,
 void updateColors();
 void updateBlocks();
 void updateSize();
+#ifdef FEATURE
+void pauseBlocks();
+void resumeBlocks();
+#endif
 
 #endif
diff --git a/tetris/scenes.cpp b/tetris/scenes.cpp
index 2d87100..7146fba 100644
--- a/tetris/scenes.cpp
+++ b/tetris/scenes.cpp
@@ -27,6 +27,12 @@ void addMainSceneItems( SDLPP::Scene &scene,
     bg->setPermanent();
     bg->setId( BACKGROUND_ID );
     scene.addObject( bg );
+#ifdef FEATURE
+    auto testcircle = std::make_shared< SDLPP::CircleRender >(
+        LEFT_BORDER, 0.2, 0.05, r, "#FF00AA", true );
+    testcircle->centerX();
+    scene.addObject( testcircle );
+#endif
 
     // create coliders for counting blocks in line
     double posy = 1;
@@ -311,6 +317,9 @@ void handleKeyDownMain( SDL_Keycode key, SDLPP::Scene &scene ) {
         g_update_scenes.push_back( g_menu_scene );
         g_active_scenes.push_back( g_menu_scene );
         g_input_functions.push_back( menuSceneInput );
+#ifdef FEATURE
+        pauseBlocks();
+#endif
         break;
     case SDLK_LEFT:
     case SDLK_a:
@@ -422,7 +431,7 @@ void pollEventsMain( SDLPP::Scene &scene ) {
         case SDL_WINDOWEVENT:
             if ( event.window.event == SDL_WINDOWEVENT_RESIZED ) {
                 for ( auto &x : g_active_scenes )
-                    g_update_scenes.push_back(x);
+                    g_update_scenes.push_back( x );
                 g_update_size = true;
             }
         default:
@@ -490,6 +499,9 @@ void handleKeyDownMenu( SDL_Keycode key ) {
         g_main_scene->setPrevTicks( SDL_GetTicks() );
         g_active_scenes.pop_back();
         g_input_functions.pop_back();
+#ifdef FEATURE
+        resumeBlocks();
+#endif
     } break;
 #ifdef DEBUG
     case SDLK_r:
@@ -523,7 +535,7 @@ void handleKeyDownMenu( SDL_Keycode key ) {
             g_input_functions.pop_back();
         } break;
         case MAIN_MENU_OPTIONS:
-            g_update_scenes.push_back(g_options_scene);
+            g_update_scenes.push_back( g_options_scene );
             g_active_scenes.push_back( g_options_scene );
             g_input_functions.push_back( optionsSceneInput );
             break;
@@ -554,7 +566,7 @@ void pollEventsMenu() {
         case SDL_WINDOWEVENT:
             if ( event.window.event == SDL_WINDOWEVENT_RESIZED ) {
                 for ( auto &x : g_active_scenes )
-                    g_update_scenes.push_back(x);
+                    g_update_scenes.push_back( x );
                 g_update_size = true;
             }
         default:
@@ -599,6 +611,9 @@ void handleKeyDownGameOver( SDL_Keycode key ) {
     case SDLK_RETURN:
         switch ( g_game_over_select ) {
         case GAME_OVER_RESTART:
+#ifdef FEATURE
+            resumeBlocks();
+#endif
             resetGame();
             break;
         case GAME_OVER_QUIT:
@@ -625,7 +640,7 @@ void pollEventsGameOver() {
         case SDL_WINDOWEVENT:
             if ( event.window.event == SDL_WINDOWEVENT_RESIZED ) {
                 for ( auto &x : g_active_scenes )
-                    g_update_scenes.push_back(x);
+                    g_update_scenes.push_back( x );
                 g_update_size = true;
             }
         default:
@@ -693,7 +708,8 @@ void handleKeyDownOptions( SDL_Keycode key ) {
                 g_options_options[OPTIONS_MENU_SHADOW].get() )
                 ->changeText( std::string( "Show shadow: " ) +
                               ( g_show_shadow ? "YES" : "NO" ) );
-            g_update_objects.push_back(g_options_options[OPTIONS_MENU_SHADOW]);
+            g_update_objects.push_back(
+                g_options_options[OPTIONS_MENU_SHADOW] );
             break;
         case OPTIONS_MENU_3D:
             g_show_3d = !g_show_3d;
@@ -701,7 +717,7 @@ void handleKeyDownOptions( SDL_Keycode key ) {
                 g_options_options[OPTIONS_MENU_3D].get() )
                 ->changeText( std::string( "Show block texture: " ) +
                               ( g_show_3d ? "YES" : "NO" ) );
-            g_update_objects.push_back(g_options_options[OPTIONS_MENU_3D]);
+            g_update_objects.push_back( g_options_options[OPTIONS_MENU_3D] );
             g_update_3d = true;
         default:
             break;
@@ -726,7 +742,8 @@ void handleKeyDownOptions( SDL_Keycode key ) {
                 g_options_options[OPTIONS_MENU_SHADOW].get() )
                 ->changeText( std::string( "Show shadow: " ) +
                               ( g_show_shadow ? "YES" : "NO" ) );
-            g_update_objects.push_back(g_options_options[OPTIONS_MENU_SHADOW]);
+            g_update_objects.push_back(
+                g_options_options[OPTIONS_MENU_SHADOW] );
             break;
         case OPTIONS_MENU_3D:
             g_show_3d = !g_show_3d;
@@ -734,7 +751,7 @@ void handleKeyDownOptions( SDL_Keycode key ) {
                 g_options_options[OPTIONS_MENU_3D].get() )
                 ->changeText( std::string( "Show block texture: " ) +
                               ( g_show_3d ? "YES" : "NO" ) );
-            g_update_objects.push_back(g_options_options[OPTIONS_MENU_3D]);
+            g_update_objects.push_back( g_options_options[OPTIONS_MENU_3D] );
             g_update_3d = true;
         default:
             break;
@@ -774,7 +791,7 @@ void pollEventsOptions() {
         case SDL_WINDOWEVENT:
             if ( event.window.event == SDL_WINDOWEVENT_RESIZED ) {
                 for ( auto &x : g_active_scenes )
-                    g_update_scenes.push_back(x);
+                    g_update_scenes.push_back( x );
                 g_update_size = true;
             }
         default:
diff --git a/tetris/tetris.cpp b/tetris/tetris.cpp
index 7471f23..8222d53 100644
--- a/tetris/tetris.cpp
+++ b/tetris/tetris.cpp
@@ -148,19 +148,19 @@ int main() {
             updateSize();
             g_update_size = false;
         }
-        for(size_t i = 0; i < g_update_scenes.size(); i++) {
+        while ( !g_update_scenes.empty() ) {
             g_update_scenes.back()->updateSizeAndPosition();
             g_update_scenes.pop_back();
         }
-        for(size_t i = 0; i < g_update_objects.size(); i++) {
+        while ( !g_update_objects.empty() ) {
             g_update_objects.back()->updateSizeAndPosition();
             g_update_objects.pop_back();
         }
 
-
         renderer->clearRenderer();
-        for ( auto &x : g_active_scenes ) {
-            x->renderScene( false );
+        for ( size_t i = 0; i < g_active_scenes.size(); i++ ) {
+            g_active_scenes[i]->updateScene();
+            g_active_scenes[i]->renderScene( false );
         }
         renderer->presentRenderer();
         g_wait_for_anim = false;