OS X: What Games Work Nicely on My Macbook Pro 13"

[Joedent7]

So as of lately I have seen that Steam has been having huge holiday sales on their games and I really want to purchase some. However, I do not know what games will work well on my macbook. I am willing to lower graphics settings to make the game run smoother. I am just more concerned about smooth gameplay. Also they don't have to be games from steam any games will do

My macbook specs are

Macbook Pro 13"

Processor 2.4 GHz Intel Core i5

Memory 4 GB 1333 MHz DDR3

Graphics Intel HD Graphics 3000 384 MB

I know it is the base model and not made for games, but I am curious. I also do not run any bootcamp programs. Thank you for the help!