ball, is all about opening both doors to get the ball in the 'starting' room, where you can place a portal at one spot in the room and another portal in the upper right of the rotating room (place portal then rotate the room, then place portal inside starting room, and be fast)
Good to see other people making additional maps, was a good 20 minute map =) The whole rotating room idea was cool, but not sure if its a bug or if I missed part, once the elevator fades to black, you can still walk around and shoot portals.... only in pitch black =/