This is billed as a preview for Marathon 5, with a test map thrown in so you can see the new shapes. I'd say it's one heck of a fun quickie map, with some nasty exploding drones thrown in for your sidestepping pleasure. (Don't fall off the walkway... down is death.) My only disappointment was that there was no ending message... when you're done, the term says the same as it does when you're not done. Ah, well... it's a test. Go read about it at the Drone Test Page.