last week, Void Star Creations' puzzler Poker Smash will be this Wednesday's Xbox Live Arcade title. The game will, erm, smash its way onto the network February 6 at 4:00 a.m. ET for 800 MS points ($10). Unfortunately, that $10 is not an ante, and you can't win that money back with a good play.
Also coming this week is a free update to Crystal Quest that, according to the Gamerscore blog, will "add a crazy multiplier scheme to offer even higher scores."