Gray Area
My entry for Ludum Dare 30. This was my first Ludum Dare entry, and probably my first ever full game. I had done game development before this but never actually finished anything. I suppose the 48 hour time limit pushed me over the edge.
The game is mostly just black and white. There is a black character, and a white character. The black character only collides with black shapes and vice versa. The fun part is that, for instance, a black shape can overlap another black shape, creating a new opening for the white character to jump into.