Portal 2 - Wikipedia
Portal 2: Pretty Much Every PS3 Question Answered (and that Cake thing, too) – PlayStation.Blog
Getting Portal 2 for PS3 seemed like a good idea at the time, what with getting it on Steam for free. : r/gaming
Valve's Erik Wolpaw on Portal 2's difficulty, PS3 Steam features | Engadget
Valve bringing Steam-supported Portal 2 to PS3 in April - CNET
Steam's The Real Deal For PS3 Portal 2 | TechCrunch
Steam for PS3 Portal 2 detailed - GameSpot
Valve talks Portal 2 on PlayStation 3, Steam on 360 | Ars Technica
Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
Does anyone know the name of the PS3 menu theme for Portal 2? : r/Portal
Buy Portal 2 PS3 Game Code Compare Prices
Valve permanently drops Portal 2's price to $29.99 on Steam | VG247
Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
Portal 2 on PS3: How to redeem the free Steam copy for your PC
Portal 2 • PS3 – Mikes Game Shop
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
Valve Details Steam Features for Portal 2 on PS3 - The Escapist
Is Sony thinking about buying Valve and Steam for the PlayStation 5?
Buy Portal 2 for PS3 and get the Mac version for free
PS3 Cheats - Portal 2 Wiki Guide - IGN
