Steam On PS3: It's A Doddle | TheSixthAxis
Portal 2 - Wikipedia
Portal 2 for PC or Mac Computer digital code only | eBay
Portal PS3 And Steam Code Can Be Used Separately | N4G
Buy Portal 2 PS3 Game Code Compare Prices
Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
Buy Portal 2 PS3, get PC/Mac version free & Steam support – Destructoid
Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
How Does Steam Work On the PS3? - GameRevolution
Portal 2 on PS3 features cross-platform chat, multiplayer and a free Steam copy | Engadget
Valve: "Playstation 3 and PC cloud saves are separate and cannot be shared". I'm angered by how often cross platform save sharing in Portal 2 was reported (I'm looking at you, Game
Buy Portal 2 for PS3 and get the Mac version for free
Steam for PS3 Portal 2 detailed - GameSpot
Valve hopes Steam for PS3 will support more than Portal 2 – Destructoid
PC, PS3 Owners Can Play Portal 2 Together | WIRED
PS3 Steam Portal 2 - YouTube
Valve talks Portal 2 on PlayStation 3, Steam on 360 | Ars Technica
Valve's Erik Wolpaw on Portal 2's difficulty, PS3 Steam features | Engadget
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 +
Portal 2 on PS3: How to redeem the free Steam copy for your PC
Portal 2 to have PC & PS3 Co-op - SteamUnpowered
Portal 2: Pretty Much Every PS3 Question Answered (and that Cake thing, too) – PlayStation.Blog
Portal 2 • PS3 – Mikes Game Shop
Portal 2 PS3: Redeeming the PC copy - YouTube
