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A couple of big new games are landing today for Mac users. We told you about BioShock Infinite earlier this month, the third instalment in the popular 2K/Irrational Games series that originally launched in March to rave reviews on consoles. Mac gaming heavyweights Aspyr have been working on porting the game to Mac since its initial release, and today the game is finally going on sale through Aspyr’s GameAgent store and other retailers. Aspyr sent over a beta of the title last week, and we’ve had nothing but positive first impressions from our time with the game since. The other big Mac title launching today, SimCity, might have had some major issues in its beta, but we’re happy to report you won’t run into similar performance problems with BioShock Infinite.

As usual, the title will support SteamPlay, allowing users to purchase the game once and play on both PC and Mac through Steam. It’s also available on the Mac App Store. However, Aspyr’s own distribution service, GameAgent, is offering some pretty enticing pre-order bonuses if you pick up the title through them…

Not only will pre-orders through GameAgent get you the “Columbia’s Finest DLC,” but Aspyr is also promising an extra 20% off the $59.99 price tag for GameAgent customers making $39.99. The “Clash in the Clouds” DLC will be available to purchase at launch, and plans are in place to support any additional DLC for the title following its release. System requirements, and everything else you need to know, are on the GameAgent blog here.

The latest SimCity title got off to a rough start when it first launched in March with developer Maxis offering refunds and free EA games to players disgruntled with server troubles and other teething troubles. Despite that and a few delays for the OS X port, EA announced today that preloading of the game is now available through the EA origin store ahead of the game’s official Mac release today at 10AM PDT.  Hopefully Maxis and EA have had enough time to get the Mac version of the game ready for today’s launch.