Portal fans are going to love the “Perpetual Testing Initiative” which is a level editor DLC that drops on May 8th for Mac and PC.

Perpetual Testing Initiative (PeTI), which combines a powerful, easy-to-use Puzzle Maker with full Steam Workshop integration, and will be available free for the PC and Mac on May 8th.

[...]

There are already hundreds of incredible Portal 2 puzzles in the wild, but chances are you haven’t played them. They’re hard to find, hard to install, and hard to manage. We’re changing that. Now that we’re adding the Steam Workshop to Portal 2, you’ll be able to browse a virtually endless stream of community-crafted puzzles, then install and play them with just one click from any web browser. Play the most popular maps in the world, or just what your friend created last night.

[...]

With the Puzzle Maker, you can create test chambers of all shapes and sizes. It’s incredibly easy to use — jump right in and start making cool stuff. When you’re happy with your work, publish it to the Workshop for your friends. or even the whole world, to play.

Oh, and let’s be honest, nobody makes an awesome trailer quite like the folks at Valve

Check out this awesome mod of a replica TOS hand phaser , turning it into devastating balloon popping awesomeness.

They may not be zombies but in this mod for Skyrim the characters certainly know how to dance like Michael Jackson was still kicking it.

To celebrate the opening of the Steam Workshop for Skyrim, Valve and Bethesda have teamed up to bring you the Portal 2 Space Core mod, which will let the aggressively space-centric little robot tag along on your adventures in Tamriel.

If you thought the Macho Man Randy Savage Dragon mod was scary then you haven’t seen anything yet, because there is nothing as scary as My Little Pony.