Portal 2 has received a permanent price drop on Valve's digital service, Steam.
The sequel to one of this generation's most unique games is now available on Steam for $29.99. Also, Valve has released a bundle which consists of Portal and Portal 2 with a price tag of $34.98.
Portal 2 has sold over two million units on consoles since its April launch, but Valve, as always, remain tight lipped on the game's Steam sales.
