Jan 19, 2011 09:15 GMT  ·  By

It seems that Valve is respecting its word, and will make the PlayStation 3 version of Portal 2 the definitive edition of the game, as not only will the game unlock a full copy of it on the PC or Mac platform, but it will also have cross-platform multiplayer with the aforementioned versions.

Valve promised at last year's E3 that Portal 2 on the PlayStation 3 will be the definitive version of the game, and, through its newest announcement, confirms its promise.

Customers who buy Portal 2 on the PlayStation 3 will be in for some major treats when the game comes out.

Not only will they be able to play the game on the console, but, if they link their PlayStation Network account with their Steam one, they'll also get a free digital copy of Portal 2 for the PC or Mac operating systems.

What's more, Valve is offering PS3 users access to its Steam Cloud system, meaning that all save games will be backed up to the company's own servers, not just on your local PS3.

But the most positive aspect of owning a PlayStation 3 edition of Portal 2 is that the game has cross-platform connectivity with the PC and Mac ones.

That's right, after quite a lot of time, console owners and PC ones will be able to play together through Portal 2's cooperative mode.

Besides the cross-platform multiplayer, there's also going to be chat support between the different versions.

"PS3 gamers will be able to simply drop the Blu-Ray disc in the PS3, link to their Steam account from inside the game, and all their Steam friends (on PC and Mac) will be visible and accessible for chat and game invites," said said Josh Weier, project lead on Portal 2 at Valve.

"We made a promise to gamers at E3 that Portal 2 for the PlayStation 3 would be the best console version of the product," added Gabe Newell.

"Working together with Sony we have identified a set of features we believe are very compelling to gamers. We hope to expand upon the foundation being laid in Portal 2 with more Steam features and functionality in DLC and future content releases."

As you can see, after saying that the PlayStation 3 isn't a good platform for its games, Valve is now really backing up the Japanese console.