Yes you can install Sims 3 on a PC or a Mac.
Yes, for both PC and mac
the sims 3 is for the PC, Mac, ipod touch and iphone
Mac, PC, iPhone
yes
ON THE IPHONE/IPOD: Yes, Ambitions is NOT an add on. You don't first need Sims 3 in order to play Sims 3 Ambitions. However, the two games can exchange data if you do have both. ON PC/MAC: I believe that Sims Ambitions does require Sims 3 for PC/Mac as it is an expansion pack. However I do not have the PC/Mac version so I am unsure.
Look in the bottom left of the Sims 3 case. Does it say - PC MAC. If it does, it'll run on a PC & a Mac. Same for all the expansion packs!
You get it from the store or steam if they have it.
You can't. You can only use cheats in The Sims 3 for PC or Mac.
it can only be played on the PC and MAC
No, only PC and Mac
you have to buy an external drive to attach to your PC in order to install the game.
Yes you can, there are just different steps to install it.