FTP (free to play) games for Mac?

I have a brand new, powerful iMac. I love it. BUT THERES NO *GAMES FOR IT! When I had a PC I used to play games like Combat Arms and Crossfire. BUT THOSE GAMES DONT WORK FOR MAC! And the only games I’m finding that is compatible with Mac… ARE EITHER CHEESY, LAME, COST MONEY, OR HAVE ONLY A HANDFUL OF DAILY PLAYERS!!! WTF? ANY HELP?

A lot of the “free” MMOs you could play on Mac…