make a call of duty clone it can be 3d or 2d as long as it is a call of duty type of game and it can be the zombies game mode or online (not like you have time for that)  any type of game mode as long it is in any cod game and yes ds cod games do count (oh god) any type of game making thing is allowed like scratch or unity and even ones that i don't know about as long as the game works it is fine