Videogames that will run on Mac?

I have a Macbook running OS-X and i'm looking for some games that will run on it, i'm looking more for RPG's, shooters, and RTS games. I already have Diablo 1 and 2, Sims 3, Sims medieval, Bioshock, and Borderlands. I would prefer to run the games directly on mac and not through bootcamp, so if anyone knows of any games please share thank you.