Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
Portal 2 on PS3 features cross-platform chat, multiplayer and a free Steam copy | Engadget
Steam for PS3 Portal 2 detailed - GameSpot
Portal 2: Pretty Much Every PS3 Question Answered (and that Cake thing, too) – PlayStation.Blog
Portal 2 on PS3 was the only Valve game on console to be cross play and cross progressions with PC via logging into steam on your PS3 and you'd get steam achievements +
Buy Portal 2 PS3 Game Code Compare Prices
Portal 2 PS3 code anyone? Enjoy. : r/gaming
Portal PS3 And Steam Code Can Be Used Separately | N4G
Steam On PS3: It's A Doddle | TheSixthAxis
Portal 2 PS3: Redeeming the PC copy - YouTube
PC, PS3 Owners Can Play Portal 2 Together | WIRED
Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
Portal 2 for PC or Mac Computer digital code only | eBay
Portal 2 - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game
PC, PS3 Owners Can Play Portal 2 Together | WIRED
Buy Portal 2 PS3, get PC/Mac version free & Steam support – Destructoid
Steam's The Real Deal For PS3 Portal 2 | TechCrunch
Portal 2 - Wikipedia
Valve Details Steam Features for Portal 2 on PS3 - The Escapist
Valve permanently drops Portal 2's price to $29.99 on Steam | VG247
Valve bringing Steam-supported Portal 2 to PS3 in April - CNET
PS3 Cheats - Portal 2 Wiki Guide - IGN
Buy Portal 2 for PS3 and get the Mac version for free
