Free Portal 2 DLC detailed

Acclaimed first-person puzzler Portal 2 gets new DLC "this summer", developer Valve has announced, and you won't have to pay a penny for it.

The pack, referred to only as DLC #1, will include new test chambers, leaderboards, a challenge mode for single and multiplayer "and more".

The pack will be free to download on all platforms – Mac, PC, PlayStation 3 and Xbox 360. A nod perhaps to the brouhaha surrounding the day-one paid DLC offered at launch?

Eurogamer's Oli Welsh awarded Valve's sequel a perfect 10/10 when it launched earlier this month, stating "it will no doubt stand as one of the best entertainments in any medium at the end of this year. It's a masterpiece."