Trion Worlds announces a free week is underway for Atlas Reactor, offering everyone the chance to check out this turn-based battle arena that's currently in closed beta testing. The game is playable by all between now and July 17th, and they offer a video to raise interest (to the extent that 15 seconds of CG footage can) along with a user guide to help get new players started. They also mark the event with the release of Celeste, a new freelancer, and say another new mechanized hero will be added to the game on Tuesday. The game is available on Steam, and is currently on sale for those who enjoy their sample.