diff --git a/src/game.c b/src/game.c
index c72ddaf..2dd515e 100644
--- a/src/game.c
+++ b/src/game.c
@@ -92,8 +92,10 @@ void runGameCycle()
         // show leaderboard when collided
         // TODO consider game.lifesRemaining and reset if still good?
         LOGI("game: collided with wall or self! => show leaderboard\n");
-        game.gameState = MENU;
-        showLeaderboard();
+        LOGI("DEBUG: collision currently disabled, game will continue in 1s...\n");
+        DELAY(1000);
+        //game.gameState = MENU; //TODO add config.collisionEnabled option?
+        //showLeaderboard();
         return;
     }
 
@@ -108,7 +110,7 @@ void runGameCycle()
     }
 
     //--- update frame ---
-    renderGame();
-    //printMap(game.map); (render game to console)
+    //renderGame();
+    printMap(game.map); //render game to console
     return;
 }
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index f0a7d5c..54813df 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2,6 +2,9 @@
 
 extern "C" {
 #include "food.h"
+#include "game.h"
+#include "input.h"
+#include "render.h"
 }
 
 //initialize SDL window
@@ -11,8 +14,30 @@ extern "C" {
 //uninitialize SDL
 
 
+
+//==========================
+//====== enabled test ======
+//==========================
+//uncomment one test at a time to run the corresponding code in main()
+//#define TEST__FOOD_PLACEMENT
+//#define TEST__SDL_INPUT
+#define TEST__GAME_WITH_CONSOLE_OUTPUT
+
+
+
+
 int main(int argc, char *argv[])
 {
+  gameInit();
+
+
+#ifdef TEST__FOOD_PLACEMENT
+  // --- test food.c ---
+  startFoodPlacementTest();
+#endif
+
+
+
   SDL_Init(SDL_INIT_VIDEO);
 
   SDL_Window *window = SDL_CreateWindow(
@@ -29,7 +54,40 @@ int main(int argc, char *argv[])
   SDL_RenderClear(renderer);
   SDL_RenderPresent(renderer);
 
-  SDL_Delay(1000);
+
+
+
+
+#ifdef TEST__GAME_WITH_CONSOLE_OUTPUT
+  // --- test game with render to console ---
+  game.gameState = RUNNING;
+  while (game.gameState != EXIT)
+  {
+    processInputEvent();
+    SDL_Delay(600);
+    processInputEvent();
+    runGameCycle();
+  }
+#endif
+
+
+
+
+#ifdef TEST__SDL_INPUT
+  // --- test input.c ---
+  game.gameState = RUNNING;
+  while (game.gameState != EXIT)
+  {
+    processInputEvent();
+    SDL_Delay(100);
+  }
+#endif
+
+
+
+
+
+  SDL_Delay(500);
 
   SDL_DestroyWindow(window);
   SDL_Quit();