Mac gamers can finally join their PC users in gaming via Steam which is now available for Apple Mac OS X. Steam has offered Portal game for free until May 24th.
From Steam blog: Steam has been a service exclusively for PC users since we launched it in 2004. For the first time we and our partners are bringing it to another platform. It’s been a ton of work, but the Mac is great for the same reason the PC is great – they are both open systems that let gamers and game developers be as close as possible.
So check it out. If you have a Mac and are new to Steam, welcome! If you’ve been with us since the beginning, borrow a Mac and log into your Steam account and jump into a game. And for everybody, Portal is free from today until the 24th.