Is Sony thinking about buying Valve and Steam for the PlayStation 5?
Valve Details Steam Features for Portal 2 on PS3 - The Escapist
Buy Portal 2 for PS3 and get the Mac version for free
Valve Reveals Portal 2 for PlayStation 3: Steam Details – PlayStation.Blog
Portal 2 on PS3: How to redeem the free Steam copy for your PC
PS3 Cheats - Portal 2 Wiki Guide - IGN
Portal 2 - Wikipedia
Portal 2 - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game
Valve permanently drops Portal 2's price to $29.99 on Steam | VG247
Portal 2 for PC or Mac Computer digital code only | eBay
Buy Portal 2 PS3, get PC/Mac version free & Steam support – Destructoid
Amazon.com: Portal 2 - Playstation 3 : Video Games
PC, PS3 Owners Can Play Portal 2 Together | WIRED
Portal 2 on PS3 features cross-platform chat, multiplayer and a free Steam copy | Engadget
Portal 2 PS3 Edition To Have Cross-Platform Play, Other Steam Features | TechCrunch
Portal 2 PS3: Redeeming the PC copy - YouTube
Valve bringing Steam-supported Portal 2 to PS3 in April - CNET
Does anyone know the name of the PS3 menu theme for Portal 2? : r/Portal
Just posting again from mildly interesting because someone said it would fit here anyway I just realised my ps3 copy of portal 2 lets you play on steam for free. : r/Portal
Valve's Erik Wolpaw on Portal 2's difficulty, PS3 Steam features | Engadget
Portal 2: Pretty Much Every PS3 Question Answered (and that Cake thing, too) – PlayStation.Blog
Portal 2 PS3 code anyone? Enjoy. : r/gaming
Valve talks Portal 2 on PlayStation 3, Steam on 360 | Ars Technica
Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
Buy Portal 2 PS3 Game Code Compare Prices
PS3 Steam Portal 2 - YouTube
