The game can be downloaded here: http://t.co/NPsZNvsk
(It has not been widely tested)
The theme was Evolution. I made Darwin: Second Strike, it's a very (very) simple platformer. I made all the graphics ... as you can probably tell :D I used vectors to represent the level geometry and the level itself it was just one big image.
I went for Zombie Darwin back from the grave to pelt unbelievers with his Origin of the Species opus.
I probably spent too much time on the title screen - there's a cool intro animation through :D