The first thing that came to my mind is, that fullscreen and a working volume slider are VITAL. I know you didn't finish, so I won't be very hard on you in the comment. I love your idea, I would however expect a few more features from four people. I assume you didn't have time to add an ending, which is the reason for my small gameplay and fun factor rating. The game is neither pretty nor ugly, the audio is ok. Your best assets are the special object and theme implementation .