In case you own a 2011 MBA and were hesitant in buying Grand Theft Auto, I bought all three from the Mac App Store to test it out. I am using a 2011 Macbook Air 13'' i5. Grand Theft Auto III - Playable - Lags a bit when driving vehicles Grand Theft Auto: Vice City - Very playable - No lag when driving vehicles Grand Theft Auto: San Andreas - Barely playable - very choppy - freezes for 2 seconds every now and then *note: There are reports on the MAS via review that the game has problems on MBP and iMac's with better specs than my MBA, so it might be the app's fault. Temperature, according to iStat Nano 3 menu item, goes up to 80 - 95 degrees in celsius when playing any GTA game on the MBA for about 10 - 20 minutes. I can hear my fans kicking in but it's nothing to worry about. Computers were made to be used, no harm in testing the limit of your machine.