If you like your games old school and pixelated, then you will love this surprisingly difficult dungeon crawler created in under 48 hours by Minecraft creator Markus "Notch" Persson. It hearkens back to the days when games came without explanation, where you had to stumble around to figure out what's going on, and the simple style masked a devilishly difficult puzzle element. It's fun, quirky, and can be played for free if you follow the link. Now get busy punching some bats and eyeballs!
Link -via Joystiq