Downloadable prologue game 2: CASE ZERO will be exclusive to ahead of the main title's release this summer.

Set in the period between the two Dead Rising instalments, CASE ZERO introduces new character Chuck Greene as he battles through zombies in the desert locale of Still Creek. The download is meant to bridge the story of the two games.

No release for or is planned, though both platforms are getting versions of proper. A price for the 360 download has yet to be set.

Dead Rising 2 will be available for Xbox 360, PS3, and PC on August 31.

By Tracy Erickson