
From April onwards Mac-users will be able to use Valve's Steam platform natively on OS X. Using Steam on OS X was possible before by using Wine but compatibility was varying. Wine is a set of open source Windows Libraries ported over to Linux/OS X allowing Windows applications and games to run natively within the Linux/OS X environment. Together with the appearance of a Native OS X Steam variant the recently announced Portal-2 will appear on Steam simultaneously in both PC- and OS X flavors.