: An intuitive "blueprint" style interface that allows you to drag and drop cubes, gels, and turrets to build your own chambers.
: Adds a third portal (the Time Portal) to travel between two different timelines. Get Peer Review DLC - Xbox Portal 2 (Inclu ALL DLC)
Released as the first major update, this expansion focuses on expanding the story after the main campaign ends. : An intuitive "blueprint" style interface that allows
: Adds a competitive layer to both single-player and co-op maps. You can compete for the fastest time or the fewest portals placed with global leaderboards. 2. Perpetual Testing Initiative (DLC 2) Portal 2 (Inclu ALL DLC)