I got a new FPS game for Christmas called Prey. I don’t know if you’ve heard of or played it but it’s really something. Check out this trailer and there’s also a link to a playable demo:
http://www.insidemacgames.com/misc/movieviewer.php?Movie=117&Session=NTM0OC43MTEuNzIxMQ==
I highly recommend it even if you’re not a first person shooter fan.