The Potato Fools Day ARG resulted in an early unlock for Portal 2, but the clever tricksters at Valve have shown how far ahead they planned by hiding ARG notes inside the game itself. The ARG Wiki ...

Two weeks ago, Valve Software released -- to critical and popular acclaim -- the highly anticipated sequel to its comedic first-person puzzle game, Portal. The game was originally scheduled to launch ...

Portal 2 may be launching early, but Valve needs your help to make that happen. Valve wants you to play the Potato Sack indie games to speed up the release process. The on-going augmented reality game ...

Valve's alternate reality game (ARG) countdown clock has reached its apex, and revealed that the rumors are true: you can play Portal 2 before its set release date, but nothing in life comes free. The ...

Portal 2’s release has been greeted largely with high praise from critics whose reviews have pushed its average up to 95% on review-aggregation site Metacritic over the last couple of days. However, ...

For the last two weeks, Two Tribes has worked together with Valve and eight other indie developers on the Portal 2 ARG. Today, Two Tribes has announced that "murderous GLaDOS" has invaded both Toki ...