Portal 2 AR game designed by indie devs
Brenna Hillier
12 years ago
No more potatoes: Portal 2 available right now on Steam
Portal 2 ARG ongoing, Half-Life hints draw Internet's eye
Quick Shots - Portal 2 art explosion found in AR game
More Valve ARG elements reveal themselves
John Callaham
Rumor: More clues to Valve's ARG revealed?
Rumour: Steam's Potato Sack bundle contains a Valve AR puzzle