Amazon.com: Portal 2 - Playstation 3 : Video Games
Steam's The Real Deal For PS3 Portal 2 | TechCrunch
PS3 Steam Features for Portal 2 Revealed - SonyRumors
Valve bringing Steam-supported Portal 2 to PS3 in April - CNET
Portal 2: Pretty Much Every PS3 Question Answered (and that Cake thing, too) – PlayStation.Blog
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
Does anyone know the name of the PS3 menu theme for Portal 2? : r/Portal
Portal 2 PS3 MANUAL ONLY Original Authentic Playstation | eBay
Portal 2' gets Steamy on PlayStation 3
Portal 2 on Steam
Portal 2 - Wikipedia
PC, PS3 Owners Can Play Portal 2 Together | WIRED
Amazon.com: Portal 2 - PC : Video Games
Portal 2 Playstation 3 PS3 - Complete / CIB Tested + Working 151903088265 | eBay
Steam Gets "Big Picture Mode" For PS3 | TechCrunch
Portal 2 | PS3 vs XBOX 360 vs PC (Which One is Better!) - YouTube
Valve talks Portal 2 on PlayStation 3, Steam on 360 | Ars Technica