Excite Games - A huge selection of card games, board games, arcade games, sports games, strategy games, trivia and more you can play by yourself or in real time with other players. Plus a chance to win cash and prizes. Chess, checkers, gin, hearts, spades, cribbage and backgammon. Play chess online in real-time, learn how to play chess, improve your skills and find out what's going on in the world of chess. Spades, Chess, Risk, Poker, Battleship and other card, board and strategy multiplayer games.
Single player games too.
MSN Gaming Zone - Microsoft Network's Gaming Zone has lots of free, multiplayer online games. Spades, Hearts, Checkers, Chess, Go, racing, strategy, trivia and many more quality games. Real-time play, realtime chat. Single player games too. Swirve Sports Games - Free Fantasy Sports.