There is also the Watchmen Bench series . Go is a 2-player boardgame played on a 19 by 19 grid. It originated in Asia 3000 or 4000 years ago. I learned it in 1995. One player takes black stones, the other takes white stones.
Players alternate placing stones on the intersection points.
The goal is to surround more territory than your opponent. Stones which are fully surrounded by opponents' stones are killed and removed. The rules are remarkably simple and elegant yet give rise to very deep strategy. The Web Go Page Index is a huge list of go-related links. The American Go Association has info and links about go, and there's a newsgroup rec.games.go .