Microsoft has confirmed with a press release that this weeks Xbox LIVE Arcade releases are Tetsuya Mizuguchi’s shooter Rez HD and Ubisoft’s Chessmaster Live. Both games were supposed to be released last week but since Microsoft was making up with gamers by giving everyone Undertow for free, both games were delayed.

Rez HD is a frenetic, wire-frame adventure set to industrial beats and rhythms that match the action. The story of Rez HD takes players deep into the world’s computer network where they must hack the system, alter the visual output and take over the music, creating unique rhythms and eye candy as they dig deeper into the cyberworld.

A downloadable version of Ubisoft’s hit Chessmaster series, Chessmaster Live allows players to test and tune their chess skills against the AI or opponents of all aptitudes around the globe via Xbox LIVE. Chessmaster Live features five original chess variants, including a Message Chess option, which allows gamers to engage in matches over the span of several days, weeks or even months. The title boasts both beautifully crafted 3D chess sets inspired by luxury chess board designer House of Staunton.

Both games will be available this Wednesday for 800 Microsoft Points each.