Portal 2 UGC tools expanded to co-operative levels
Brenna Hillier
11 years ago
Portal 2 users create over 35,000 maps, Steam holds sale to celebrate
Matt Williams
"Blappeture Mesa" Half-Life reference pulled from Portal 2 DLC
Perpetual Testing Initiative now available for Portal 2
Stephany Nunneley-Jackson
Video preview demonstrates in-game editor for Portal 2
