April 21, 2011: Version 1.2 adds in the first two sections of the multiplayer story. April 20, 2011: Version 1.1 now contains the final three chapters of the single player story. April 19, 2011: ...

Test Chamber 16 is Portal 2‘s final main puzzle room and it’s definitely one of the game’s trickiest. It combines excursion funnels, repulsion gel, and turrets in a way that can stump even the most ...

It’s always nice to see a friendly face. As mentioned above, there’s only one test chamber in Portal 2 that features the Weighted Companion Cube. To unlock the achievement and hear the secret GLaDOS ...

Valve to let players create and share their own test chambers in single-player and multiplayer modes for first-person puzzler; release set for early next year. GDC Online 2011: Erik Wolpaw, Marc ...