Minecraft

On September 26 I bought Minecraft.

This game is a severe productivity hazard. Unless you count hollowing out virtual mountains as productivity.

(For those that haven't heard about this recent craze, Minecraft in its most interesting variant is basically a sandbox game with resource limitations and enemies. You get an infinite-other-than-coordinate-limits procedurally-generated world (often beautiful) made up of cubical blocks, with resources scattered (and buried) around it. And monsters whenever it's dark (i.e. nighttime and in caves). Then you get to reshape your part of the world by adding and deleting blocks, and crafting objects out of the resources you've dug up. First you build shelter, then you explore caves and build farms, then you build grand castles — or underwater bases — or intricate traps and mazes — whatever. It's very open-ended.)

I've put up an automatic copy of my world as a multiplayer server; just connect to switchb.org in Minecraft Alpha. (With the usual caveat that Alpha multiplayer is glitchy, so the mechanisms won't work as intended.) I may take it down if the load is significant, though.