Buyers of Portal 2 on PS3 will receive a code that also allows them to install the game on PC.
Cross-platform functionality has also been announced which allows PS3 and PC players to take part in multiplayer matches together, chat online and upload their PS3 saved games to a cloud-based storage system.
Consumers who buy the PS3 version of Portal 2 will receive a Steam Play copy of the game for use on PC or Mac. However, they must link their PSN and Steam accounts in order to do this.
“We made a promise to gamers at E3 that Portal 2 for PS3 would be the best console version of the product,” said Valve president and co-founder Gabe Newell.
“Working 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.”
Portal 2 project lead Josh Weier added: “PS3 gamers will be able to simply drop the Blu-ray disc into the PS3 and link to their Steam account from inside the game. All their Steam friends on PC and Mac will be visible and accessible for chat and game invites.”
Valve previously announced Steam integration for PS3 at E3 last year.
Portal 2 will be released on PS3, PC and Xbox 360 – which doesn’t feature Steam or cross-platform multiplayer – in April.