Steam Owners Get 75% Off Voucher
Good news, everyone! For all you budding scientists out there, Portal 2's level creation tools have been opened up for cooperative levels via a free automatic update. The patch also includes a Quick Play option that allows players to leap into the top-rated maps.
Valve are feeling rather generous today, rewarding all Steam owners of Portal 2 Steam a 75% off voucher for... Portal 2 on Steam. You'll find it in your Steam inventory, and I daresay that you all know someone who could make use of it.