Portal 2 for PS3: Steam features detailed - Gematsu
Portal 2 PS3 Edition To Have Cross-Platform Play, Other Steam Features | TechCrunch
Buy Portal 2 PS3, get PC/Mac version free & Steam support – Destructoid
Portal 2 • PS3 – Mikes Game Shop
Portal 2 PS3: Redeeming the PC copy - YouTube
PS3 Steam Features for Portal 2 Revealed - SonyRumors
Portal 2 on PS3 features cross-platform chat, multiplayer and a free Steam copy
Portal 2 PC Review
Portal+2+%28Sony+PlayStation+3%2C+2011%29 for sale online | eBay
Portal 2: This is Steam on PS3 | N4G
Portal PS3 And Steam Code Can Be Used Separately | N4G
Steam details revealed for Portal 2 on PS3 - Gematsu
Tristan Halcomb on X: "I can't wait for Steam on the PS3! I'm getting one for Christmas I'm so excited to be able to play all my steam games on there! https://t.co/qSihOdho8f" /
PC, PS3 Owners Can Play Portal 2 Together | WIRED
Portal 2 - IGN
PS3 Steam Portal 2 - YouTube
PS3 Portal 2 buyers get PC version free - GameSpot
Portal 2 - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game