For those familiar with Valve, it is not uncommon for them to do something like this. The game itself is pulling great numbers, with almost three quarters of a million copies being sold on release day. Unlike some other DLC’s from Valve however, it will be available for all 3 platforms. These include PC/Mac, XBox 360, and the PS3.
This DLC will include new test chambers with accompanying leaderboards. In addition, a “Challenge Mode” will be available for the single and multi-player flavours. No further information is available at this time, but we will update as we receive more.
Kitguru says: Have you checked out Portal 2 yet?