Steam for PS3 Portal 2 detailed - GameSpot

Puzzle-platformer will offer cross-platform gameplay, matchmaking, friends list, achievements, cloud saves, and chat via Valve's online service on Sony's console.
Portal 2 is a first-person puzzler game from Valve Software that draws from the original formula of innovative gameplay, story, and music, which earned the original Portal more than 70 industry accolades.

Portal 2 (Sony PlayStation 3, 2011) for sale online

Portal's Free Remaster With Ray Tracing Available Now On Steam - GameSpot

Portal 2: Peer Review DLC Test 3 - Jump and Catch (PC, PS3, Xbox 360)

Portal Ps3

Portal 2 Co-Op Hands-On - GameSpot

Valve talks Portal 2 on PlayStation 3, Steam on 360

GameSpot Now Playing - Portal 2 (PC, PS3, Xbox 360)

Had Us in the First Half, Not Gonna Lie : r/Steam

Portal 2 - Wikipedia

The Orange Box - Wikipedia

Valve files trademark for Portal 3 : r/Portal