Just as expected, today marks the release a two new Games on Demand titles: Dead Rising 'n Halo Wars. Major Nelson reports each be currently available for download on yer Xbox 360, with Capcom's virtual mall full a zombies setting gamers back a paltry $20, while Ensemble Studios' final game be a bit more costly at $30. Each will take up six gigglebytes a room on yer HDD upon download. Shortcut: Halo Wars on Games on Demand [Xbox.com] Shortcut: Dead Rising on Games on Demand [Xbox.com]