Wikirunner is a short Wikipedia-based multiplayer game I wrote for Mini-LD #12 (a 48-hour solo game development uncompetition). The game involves two players, a Runner and a Chaser, and is played between articles on Wikipedia. Both players start out on random pages; the Chaser, who is quick (can traverse multiple articles per turn), tries to catch the Runner, who is nimble (may move in any direction). It can be played hotseat with a friend, or against an AI Runner or Chaser. For a bit of amusement, you can also pit the two AIs against one another.
Holy Crap: Wikirunner was featured on IndieGames.com!
The game is based on Jeremy Bushnell's excellent Wikipedian Tag rules.