I want a good Singleplayer only FPS!

So I think COD4 is great, I'm having a blast with the multi-player, and the single player was incredible. But I'm getting a bit sick ofgames with MP andSP. Just look at Bioshock. Its long, (20 hours on the first play through) its fun, and tells a great story. No multiplayer component. I feel like games are sacrificing SP just to satisfy the bigger crowd. I want another SP only FPS that will take me a while to finish. Reason why? I just prefer Single-Player. I love following a story, finding all of the plot twists and such, shooting up NPC's. I want to get the feeling that I'm an important character in the world. Not just another soldier who's about to get killed.

What do you guys think?

Vampire the Masquerade bloodlines is amazing. Best game I've ever played, well I'm still playing it years later. It's totally single player and while it's an RPG not a shooter you can take a ranged combat path. I love the game. It's at least worth a shot. I mean what have you got to lose. It's ogtta be pretty cheap these days.

TheotherCoDgameswerereallygood.SowasMaxPayne1and2.

STALKER w/ mods is the best FPS to come around in awhile. Without mods, its good. I've played almost all the FPS games from the last 5 years and STALKER w/ mods is the best I've played in a long time.

I did play the Demo for Crysis and was blown away. If you have a fairly new comp, then Crysis is a must play.

bishock took you 20 hours? :o

crysis is out soon, it has a lengthy single player, it also has multiplayer but you can just ignore that part.