http://members.gamedev.net/TANSTAAFL/Game5.html
At this point, it has all of the basic gameplay, but none of the amenities you'd expect from a completed game.
Currently, click the board to start a new game, then click a piece you'd like to move, and then to where you want to move it. The goal is to get five or more of the same symbol in a line. Game ends when you can no longer move a piece.