Valve announced today the first bit of downloadable content for recent release Portal 2
will be available free of charge to players on all available platforms sometime this summer.
The new content will include additional test chambers, leaderboards, and a "challenge mode" for single-player and co-operative play, according to the company.
Valve had previously announced
that user-created content for the title will be playable across the PC, Mac, Xbox 360 and PS3 versions of the game, though the editing tools themselves will be limited to the PC.
In 2009, the company offered free DLC to PC players of 2008's Left 4 Dead
, though those playing the Xbox 360 version had to pay for the same content
The PS3 version of Portal 2
was Valve's first console title enhanced with Steamworks support
, allowing PS3 players access to cross-platform play, chat and messaging with PC and Mac players.
The original Portal
has sold over 4 million retail copies
through last week, according to Valve, excluding digital sales through the company's Steam digital distribution service.