I bought this game called Jisahku over a year ago, but never did play it. Well a few days ago I finally opened it and played with a few buddies of mine.
You play on a three dimensional field using magnetic stones. The game is versatile in having three ways to play and is the only board game I know of that is designed to be played by one player.
I've only played one of the three versions and you can get really into it. We had to stratigicly place our stones without attracting any others. That's not so easy, especially when your drinking, but that's what makes it so fun. :)
I bought mine from Target for around $20 and has a website to order more stones in case yours wearout. Overall I recomend trying this game if you can.