It's been an exciting couple days at PAX, especially if you're a Portal 2 fan! We're following up the co-op campaign screenshots released yesterday - with actual footage from the co-op Portal 2 ...

While Portal 2's single player offered a hardy challenge, the real mind benders are found in the co-op campaign. The possibilities are much bigger withfour portals, and it can befrustrating whentwo ...

GameSpot may get a commission from retail offers. According to GLaDOS, Portal 2's dry-witted antagonist, scientific achievement is all about cooperation. That's why one of history's greatest ...

Nine minutes of co-op gameplay for Portal 2 has come out of PAX, and it's looking pretty sweet. As the video explains, the two-player co-operative mode allows both players to control separate portal ...

Portal 2 was shown to the public for the first time at PAX Prime last weekend, and while no one got hands-on time, Valve's Josh Weier was there to show us a bit of the puzzler's co-op portion. First ...

The Portal Reloaded modification for Portal 2 has today released its Cooperative update bringing in new puzzles to solve in Co-op mode. According to the Steam Page Portal Reloaded is a free, community ...

Portal 2 features a separate two-player co-operative campaign, playable over the internet, and new gameplay features include physics-changing paint. That's according to various reports and scans that ...

As Portal 2 passes three weeks since its release, now is the time to look back on cooperative play and see how it has held up. As a GeekDad who does not yet have children of video game-playing age, I ...

A seven-minute gameplay video showcasing the first puzzle’s of Portal 2‘s bot-starring co-op mode has wormholed its way online. Co-op has a pair of robots working together solving what the game ...

To anyone who has been following Valve Software's viral marketing campaign inside Portal--comprehensively chronicled by Bit-Tech--the announcement of Portal 2 should come as no surprise. Today, the ...

For these test chambers, there is going to be a ton of flying through the air.In this first room, one player will go up to the highest platform while the other creates a portal below and up on the ...