Tribes 2 is the best first person shooter ever, and to be a hard core FPS player, you MUST play this!
Then, there is stuff that you will NOT find anywhere else: Jet packs, skiing, Spinfusor, Plasma Rifle- and anything else you can think of! This is a revolution in gaming like no other that has ever been seen, you should play this if you want to say your are a hard core FPS fan. Not saying you can't be hard core if you haven't played it- but the odds are stacked against you. The game is hard- so hard that people who are the best at Tribes 2- find other games ridiculously easy.
And, last but not least- its free now! Yeah, you get all of this and more for free. The game is 8 years old, but it is free- and when everything is set to the highest possible, it looks wonderful in comparison to most games of it's time.
If you want to try it go to: www.tribesnext.com