The Portal Mod you've been waiting for. Delve into a new story with original characters, spanning over 8 hours of gameplay and featuring over 40 new challenging test chambers which make use of new mechanics.

How long is Portal: Revolution?
When focusing on the main objectives, Portal: Revolution is about 6 Hours in length. If you're a gamer that strives to see all aspects of the game, you are likely to spend around 7½ Hours to obtain 100% completion.