New computer, new game, first time playing. Game froze.

[sposposey]

Okay, I have a brand new macbook and brand new games and I just installed them. Sims 3, Sims 3 university, and Sims 3 pets. And I was playing it for the first time and - frozen. Nothing worked, had to shut down my computer. It's kind of frustrating because the Sims 3 is the only game that I expect to that. Is there ANYTHING I can do that will stop this from happening?