Valve has announced that it will port the Steam engine and their Source graphics technology to the Mac platform, starting with Portal 2. The new Steam engine “includes a new service, called “Steam Play,” with a novel feature that will allow users who work on the Mac platform to put down a game and then pick up where they left off on a PC version, or vice versa.”

According to scans from the latest issue, in the details section of the mag’s preview, Mac is clearly listed under the “platforms” section, alongside PC and Xbox 360.

[via KotakuPCMag]