Portal 2 Free Challenge Mode DLC Coming Next Month

Valve's marketing VP Doug Lombardi has revealed while speaking to Kotaku at GamesCom, that the free Portal 2 DLC pack, which was previously announced last April, will be targeted for a mid September release.

The Portal 2 DLC pack includes leaderboards, a challenge mode for single and multiplayer and a new test chamber to solve. The DLC will be available for free on the PC, Xbox 360 and the Playstation 3.