I got The Orange Box which was released by Valve on 10/10 which has 5 titles in it. Two of them I already have and the three: TF2 (finally released), HL2: Episode 2 (continuation story for HL2), and Portal. Portal is unlike anything I have messed around with. Creating portals to complete various objectives and unlocking a path to the next stage. So far its pretty simple. After about one hour, I stopped at 17 out of 19 where the room is filled with turrets and moving platforms. I can finish it later.
The flash trailer has better details
