another vote for tribes vengance irrational games are great storytellers imho
ps: the chronicles of riddick has its fair share of stealth bits dont let the movie tie in put you off unlike most ties ins this isnt a quick cash in sucky game suprisingly iy rocks
read some reviews:
heres one from gamespot
"the Chronicles of Riddick: Escape from Butcher Bay is an excellent hybrid of first-person shooting, adventure and RPG elements, stealth and combat. What's even more impressive is that Vivendi Universal Games and Starbreeze were able to put a creative, original game out that's not been created in a movie box, like so many other awful games based on licenses. The equal blend of game elements is superbly crafted, and I am honestly surprised at how much I enjoyed the stealth and hand-to-hand combat."
Riddick is an excellent game in every way, except that it is too short. It's worth playing through more than once though.
There is a sequel in development, but I don't know if it's coming out on the PC at all.