When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The Portal 2 Perpetual Testing Initiative DLC is now live, and as promised you can download the ...

Thanks to the Perpetual Testing Initiative DLC's intuitive and enthralling editor, Portal 2 has a near-endless supply of new puzzles for players to enjoy. Since its release, over 200,000 new community ...

GameSpot may get a commission from retail offers. In the Portal games, the rogue AI GLaDOS gets her kicks by putting players through a series of deviously designed test chambers. Valve is giving ...

Portal 2's biggest mod in years is out, and the project is already flying off the metaphorical Steam shelves and sitting at an incredibly high review score. With 40 puzzles, a new narrative, and ...

Wading through the world of hot DLC so you don't have to When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. All our downloads are piped in with the ...