I would like to play it, but I cannot find three other players.
4-Way Chess Game

I think it must be a lot harder but I never tried. If somebody know of a good online version of this game, just tell me.

You can play against a computer at:
http://www.pathguy.com/chess/FourChss.htm
I have done it and it is fun.

You can play on-line vs. real players at chessvariants.org
http://play.chessvariants.org/pbm/play.php?game%3D4-WAY+CHESS%26settings%3D4-WAY+CHESS
unfortunately I cant always find someone to play against there
I do play 4-Way Chess with my family a lot
Hi everybody, I just discovered this bizarre 4 players chess game. Have you ever tried it?
http://www.youtube.com/watch?v=CtrIKUBrX3s