Ballpoint pens: bad for math class, good for having a gorgeous visual aesthetic in a game. Case in point: Ballpoint Universe, an indie sidescrolling shooter drawn entirely with ballpoint pen. You play as a doodle called...Doodle. Check out the trailer.

If this looks good to you, you can try out the demo here and vote for Ballpoint Universe on Steam Greenlight here. The game drops sometime in May for $4.99 on Desura.