It would be downright deceptive to describe this week's Xbox Live Arcade games as anything other than shifty. Though GripShift makes that stance fairly obvious, perhaps you weren't aware that Arkadian Warriors features a trio of shape-shifting warriors... from Arkadia. You know, a typically hapless fantasy realm in need of saviors skilled at hacking, slashing and a variety of other violent maneuvers. The co-op capable romp through randomly generated dungeons will set you back 800 MS Points ($10), roughly the equivalent of what you'll find in the unseen pockets of a slain monster.

If monster mashing isn't your thing, perhaps you'll be tempted to speed down GripShift's tumultuously twisty tracks. They're also suspended in mid-air, making for a gravity-defying thrill ride every racing fan must experience (it says here)! As you might expect, said experience is preceded by that of spending 800 MS Points ($10) -- if not for those lovely trial versions, that one would take you for an entirely different kind of ride.