Portal 2

First gameplay of Valve's cancelled Portal prequel revealed as part of new documentary series

Games that defined the Decade: Portal 2 is still one of the most successful comedies in gaming

Left 4 Dead and Portal writer confirms new co-op first-person shooter

The 25 most inspirational female characters in games

Best games for 10-15 year old kids on PS4, Xbox One, and Nintendo Switch (that don’t suck)

Bridge Constructor: Portal is exactly what you think it is, and it's officially sanctioned by Valve

7 mind-bending gaming theories that we really want to be true

The 10 best puzzle games for console, Android, iOS and PC

Portal in augmented reality almost makes the $3,000 HoloLens worth it

Portal 2: How Valve used paint and personality to rip reality apart

"The number 3 must not be said" - the best responses from Gabe Newell's AMA

9 spectacular video game guns that don't kill

15 sidekicks who deserve their own game

The Portal movie's still happening, JJ Abrams says, and he's meeting with Valve next week

The JJ Abrams produced Portal and Half-life movies are definitely actually happening

This is what happens when you're crushed between two Portals

Games that make you feel guilty for doing as you're told