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 ...

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 ...

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If you fancy making your own maps, models, skins, or other exciting new things for Portal 2, you can now get cracking as Valve has released a beta version of the first-person puzzler's PC mod tools.

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 ...