Gravitation is a weird platforming game about life balance, that takes 8 minutes to complete. Its author describes it as "a video game about mania, melancholia, and the creative process", and points out that the game is highly autobiographical.
If you think that sounds like an art game, you would be entirely correct. So in other words, check it out :)
Developer: Jason Rohrer
Download in the open source Indie Game Installer