GameSpot may get a commission from retail offers. Start by moving forward to the portal gun stand. The ground will break below you, causing you to fall into the waters below. Move forward up the short ...

After peering down at Wheatley's failed experiment, turn around and look at the bottom left side of the wall behind you and you'll see a broken grate. Portal through it, and follow the walkway into ...

Valve showed off the first gameplay footage of the Portal 2 coop mode, set to be one of the highlights of the game. The walkthrough video shows us glimpses of some of the new features and gameplay ...

Continue into the next hall and press the red switch to open a section of wall, leading you to a large, open room beyond. There are many turret buddies guarding the room, and before you do anything ...

The fan-made modification to Portal 2, called Portal: Revolution, gained popularity shortly after it was released. With over 40 new test chambers, there are naturally some that players find difficult ...

This Portal Escape Chamber walkthrough shows the solution to the twelve puzzles in this Escape Simulator DLC room. Check out the Portal DLC Token Locations page to find all 8 hidden tokens. Interact ...

As Wheatley confronts you with his spikes, fire a portal through the broken wall behind him. After a moment, white gel will begin dripping onto another surface. Fire a portal beneath the drips, and a ...