diff --git a/a4/game.h b/a4/game.h
new file mode 100644
index 0000000..9b6c2a6
--- /dev/null
+++ b/a4/game.h
@@ -0,0 +1,31 @@
+#ifndef _GAME_H_INCLUDE_
+#define _GAME_H_INCLUDE_
+#include "world.h"
+#define MOUSE_COUNT 5
+// Set of variables that expresses state of the game.
+//
+struct game {
+    // X speed of the cat
+    int catx;
+    // Y speed  of the cat
+    int caty;
+    // X position of the cat
+    int catx_position;
+    // Y opsition of the cat
+    int caty_position;;
+    // X position of the mouse
+    int mousex[MOUSE_COUNT];
+    // Y position of the mouse
+    int mousey[MOUSE_COUNT];
+    int mouse_state[MOUSE_COUNT];
+    // Funky message
+    char message[100];
+};
+
+// Returns pointer to  newly allocated state
+void* init_game();
+
+// Changes world according to the game state (pressed key, screen size or other event)
+int game_event(struct event* event,void* game);
+
+#endif