: A professional-grade prequel with a full story and challenging puzzles.
This transformed the game's longevity by introducing the . Portal 2 (Inclu ALL DLC)
: Features new voice lines from Cave Johnson (J.K. Simmons) explaining why you are testing across infinite alternate universes. 3. Sixense MotionPack / In Motion : A professional-grade prequel with a full story
A specialized expansion originally developed for motion-tracking hardware (Razer Hydra or PlayStation Move). Portal 2 (Inclu ALL DLC)
: A new cooperative track for ATLAS and P-Body . You assist GLaDOS in hunting a "mysterious intruder" within Aperture.
: Adds a third portal (the Time Portal) to travel between two different timelines. Get Peer Review DLC - Xbox
: An intuitive "blueprint" style interface that allows you to drag and drop cubes, gels, and turrets to build your own chambers.