Mac owners rejoice: Rockstar has revealed (via their Facebook fan page) that Grand Theft Auto 3, Vice City and San Andreas will be coming to Mac as a trilogy later this year.

If you’ve been living under a rock for 95% of your life and haven’t had a chance to give classic Rock Star titles like Grand Theft Auto: Vice City a go, you’re in luck. Valve, has just announced that they will be holding a 50% off promotion on the Rock Star Collection, if you’re willing to purchase it though Steam, that is.

Anyways, you’ll be able to get 13 Rockstar titles for just $42.49. Yes, this includes Grand Theft Auto IV. Go get it.

Bringing one more great offer to PC gamers, Valve has announced that the upcoming PC port of Grand Theft Auto 4 is now available for pre-order on Steam, with those pre-ordering receiving the full PC version of Grand Theft Auto: Vice City as a cool pre-order bonus.

It would have been cooler to give San Andreas away, but I guess Vice City is good enough.

GTA 4 is due out this December on PC, months after being available on PS3 and Xbox 360. The most notable addition is the video editor which will allow users to create their own machinima.