If you've been waiting impatiently ever since Rez HD was first announced for Xbox Live Arcade, then today is your lucky day because it's finally here. If, on the other hand, you haven't been waiting for the game with bated breath, then we'd say it's still probably your lucky day because Rez just so happens to be a good game. We suggest you crank up the synesthetic, vibratory goodness as soon as possible. If, however, all that sounds like too much stimulation, perhaps you'd rather play a leisurely game of chess. It's still your lucky day then because Chessmaster Live is also available today. Both games can be yours if the price is right. The right price, incidentally, is 800 MS Points each.