Portal 2: Co-op Content Creation Added To Map Maker

Portal 2 fans can now use the game's Perpetual Testing Initiative level editor to make co-op content for two players.

None of your friends play Portal 2? Valve is giving owners of the game a "75% off Portal 2 coupon," enabling them to gift it to a chum on the cheap.

"Puzzle creators can now design and publish co-op maps, which puzzle players can now greedily consume. Well, as long as they have a co-op partner. Which the 75% off coupon should help them (i.e.: you) find. We've also added a "Quick Play" feature that creates never-ending, auto-generated playlists of the top-rated maps in a variety of categories. It has literally never been easier to figuratively jump in and literally play some Portal," reads the thinkwithportals site.

More free content? Sounds good to us.