I make computer games, mostly small ones, in Java. My favorite games to play are probably Armageddon Empires, Minecraft and Master of Orion II.
Wearing nothing but a hospital gown, you wander through a future landscape, trying to not die. After playing for a while, your heart will leap at the sight of common items like plastic bags, lighters and water bottles. Small saucepans will have you in a near-swoon. Deliciously tough and engrossing. Play it.
I was originally skeptical about what seemed to be a lightweight god game, but this is a lot of fun. It's like a cross between sim city's bulldozer tool and a god game, and the sheer enjoyment of ravaging an enemy settlement with your totem powers cannot be understated.