Portal 2 as we all know has stolen our collective hearts (not mine, because I have sadly not played it yet) and is fast becoming the greatest game Valve has ever released (what was that? Oh yes, Half Life and Counter Strike are definitely up there, but we shall not follow that course of conversation for it inevitably leads to one of us giving the other a virtual punch on the nose) and is still racking up about 18,000 players on Steam these days. (Of course Counter Strike is still at the top. I shall politely refrain from saying anything further)
Of course, since it is one of Valve’s newer games, it needs Downloadable Content (DLC) to stay afloat (unlike some other Valve games) and Valve has announced that there is a new Downloadable Content Pack that is in the works for Portal 2. This content pack will contain new test chambers for players, leaderboards, challenge mode for single and multiplayer modes, and more, and will be completely and utterly free on all platforms!
Again Portal 2 is going to have a free DLC pack in the near future for all platforms and will make sure that Portal 2 stays on top of Steam’s gaming stats.
(Addendum: This post was written in a strange kind of anti-Valve’s-new-games point of view. I assure you that it was humorous, and not cynical in any way. Counter Strike Portal 2 is the pinnacle of modern first person games.)