Portal 2 - IGN
Portal 2 • PS3 – Mikes Game Shop
Amazon.com: Portal 2 - Playstation 3 : Video Games
Portal 2 PC Review
Co-Optimus - News - New Portal 2 Box Art Pushes Co-op
Portal PS3 And Steam Code Can Be Used Separately | N4G
Valve bringing Steam-supported Portal 2 to PS3 in April - CNET
Portal 2 for PS3: Steam features detailed - Gematsu
I just realised my ps3 copy of portal 2 lets you play it on steam as well : r/mildlyinteresting
Portal 2 - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game
Portal 2 Review – Reality Breached
Portal 2 (Sony PlayStation 3, 2011) All Original Inserts. Physical Copy Only 151903088265 | eBay
Valve Details Steam Features for Portal 2 on PS3 - The Escapist
Portal 2 PS3: Redeeming the PC copy - YouTube
Portal 2: Pretty Much Every PS3 Question Answered (and that Cake thing, too) – PlayStation.Blog
PC, PS3 Owners Can Play Portal 2 Together | WIRED
PS3 Steam Portal 2 - YouTube
Buy Portal 2 PS3, get PC/Mac version free & Steam support – Destructoid
Valve Reveals Portal 2 for PlayStation 3: Steam Details – PlayStation.Blog
Steam for PS3 Portal 2 detailed - GameSpot
