Apparently there are no classifications for video games falling between AAA and B (nor any below B)? There are no AA games, A games, C games, S games, &c.
If I listed out the games that I've played the most or that had the biggest impact on me or that I've had the most fun with, I'd probably have to go pretty far down any of those lists before hitting a AAA title (then again, I've genuinely enjoyed games that I'll readily admit are not good games).