The charity puzzler Chime is now available on Xbox Live Arcade for 400MSP. It's a crazy 800+ meg file though, which is pretty damn crazy for such a simple looking game. Are they using uncompressed WAV files for music or something? Geez.

Also this week is a ton of downloadable content. 0 Day Attack On Earth gets a "Night Pack" for 560MSP, remixing previous levels with new enemy types in a night setting, Buku Sudoku got its twelfth Sudoku expansion for 160MSP, and 0D Beat Drop gets a musical expansion for 150MSP that's based on the fighter BlazBlue

And don't forget, 'Splosion Man is 400MSP for just this week on XBLA.