With new retail releases all but over for the year, it looks like we can still bank on Microsoft to offer up new titles each week on Xbox LIVE Arcade. This week sees a duo of new titles: Sierra Online's Arkadian Warriors and Sidhe Interactive's GripShift.

Arkadian Warriors is an action-packed dungeon crawler in which heroic shape-shifting warriors fight to save the Land of Arkadia from the evil grasp of Gorgon. The game features randomly generated dungeons and cooperative multiplayer both locally and over Xbox LIVE.

GripShift is a mix of platforming and stunt driving and features 120 levels, 25 race tracks and 20 deathmatch arenas across four themed worlds. Play solo or against up to three additional players over Xbox LIVE.

Both titles are available now on Xbox LIVE Arcade priced 800 Microsoft Points each.