Alta is a connection game played on a diamond-shaped board. An unusual twist of the game is that players place diagonal lines, called "switches," in the squares, which can be slanted either forward or backward. A player can either put a new switch on the board or "toggle" the direction of one of his switches. The object of the game is to connect two "nodes" at opposite corners of the board.
Alta was implemented at Zillions of Games (http://www.zillions-of-games.com/cgi-bin/zilligames/submissions.cgi/8744?do=show;id=16) and can easily be played on a larger board to make it even more difficult.Online Play