First Portal 2 DLC Is Free On All Platforms

Valve announced that the first DLC (downloadable content) for Portal 2 is in development and targeted for this summer.

Portal 2 DLC #1 will offer new "test chambers for players, leaderboards, challenge mode for single and multiplayer modes, and more."

Targeted for release this summer, Portal 2 DLC #1 will be offered free of charge for the PC, Mac, Xbox 360, and PS3.

Portal 2 was released April 19 and currently holds a Metacritic score of 95%.