Reek

Reek is a freaking game with a lot of poo in it.

You'll experience what it's like to have nightmarish diarrhea that's so intense that it'll serve as your engine and help you overcome gravity. Your goal is to defile every corner in all levels with your feces.

Beware of the janitors who will try to clean your lovingly mucked up areas. Also, lots of traps and enemies will make your life difficult and try to prevent you from making the perfect mess.