Portal 2‚ the top-rated game on Steam since launch in 2011‚ has seen its fan-made eight-hour prequel campaign delayed as Valve is still reviewing and accepting the mod. Portal 2 Revolution has the potential to be one of the best community mods ever made‚ but it looks like we’re going to be waiting just a touch longer to play it. Continue reading Steam’s top-rated game sees free prequel delayed as Valve reviews it MORE FROM PCGAMESN: Best old games‚ Best FPS games‚ Best co-op games