Portal 2 - Full Co-op Trailer

The full trailer of the Co-op bots as seen at PAX

P-Body and ATLAS. Obviously inspired by the Portal 2 co-op trailer. Someone's a big baby.

Orange receives twenty-five science collaboration points. Half of the fun of co-op is in screwing around with your partner!

Portal 2: Perpetual Testing Initiative

Portal 2: Perpetual Testing Initiative

- Portal Perpetual Testing Initiative “ Introducing the Perpetual Testing Initiative (PeTI) for Portal which combines the powerful, easy-to-use Puzzle Maker and full Steam Workshop.

Portal 2 - Full Co-op Trailer

Portal 2 - Full Co-op Trailer,

Life before Portal 2 =] I think we can put our differences behind us. For science, you monster.

Hands down, one of the greatest games (and trailers) ever done.

Portal 2

Portal 2 Co-op trailer

Portal 2's trailers and marketing campaign

Portal trailers and marketing campaign were great Gaming Discussion

Portal 2 - PAX 2010: Full Co-Op Trailer | HD

PRE-ORDER: Portal 2 - Coming April Portal 2 - PAX Full Co-Op Trailer