Diablo 3 is the first computer game I have ever played. My last MacBook was not capable of operating such a game so I only used it for surfing the web, typing documents, keynotes, etc... Anyway, I love Diablo 3 and have become highly addicted. In fact, I've also downloaded Starcraft 2 and World of WarCraft. I have noticed that playing these games on my rMBP has causes the fan to run on high and the computer gets really warm. I know this is normal, but I just wanted to know if running the fans on high because of the increased heat would eventually mess up my rMBP. I'm not a gamer and Diablo 3 is really the first game I have played since the GameCube. So this may sound like a really stupid question, but I just want to make sure i'm not messing my laptop up. Also, if this is an issue what can I do to cool my laptop down? I've seen several laptop cooling pads at Wal-Mart and BestBuy. Would these be effective? The highest my temperature has ever been was about 105 degrees and the fans once reached over 3050 rpms. One more question, If I turn "Automatic Graphics Switching" to off while playing these games, will that help the performance of the game or help my laptop to keep itself cooler?