A game where you can't touch your own colour I mean you actually can't. Try it. You'll fall straight through. It's meant for puzzles, even has a level editor. Basically you fall through whichever colour you are. Based off of my first game jam game (of which there are no surviving copies that I know of).
To play open with love2d (I should really compile these)
I honestly can't remember the keybindings so Good Luck