Mac gamers got some much needed love from the gaming industry on Wednesday as Valve released its highly aniticipated Steam game distribution platform for the Mac. Steam jumped on board the Mac platform offering 64 titles at launch that include Sid Meiers Civilization IV (Colonization, Warlords, and Beyond the Sword editions), World of Goo, Bejeweled 2, and City of Heroes. As an added bonus, Portal is available for free until May 24th on both the Mac and PC. Folks coming from the PC platform will also be happy to know that many titles are branded “STEAMPLAY” and one purchase will let you play the game on all Steam-supported platforms. So stop reading this post, point you browser to Steam’s website, and get your gaming on.