Microsoft today announced that Arkadian Warriors and GripShift will be available this week on Xbox LIVE Arcade for Xbox 360. Both games will launch on Wednesday, 12th December, 2007 at 9:00AM GMT for 800 MS Points each. The Xbox LIVE version of GripShift features updated graphics, improved controls and additional single and multiplayer content, including new Challenge courses and a Deathmatch mode. Arkadian Warriors features randomly generated dungeons and cooperative multiplayer hack & slash action, locally and over Xbox LIVE. Check the press release for details.