Best PS3/multiplat FPS story/single player mode

[Solid_Raiden]

For single player FPS experiances you will find a very short list of games recommended because single player FPS experiances are often non existant, or short. The MP is usually the main attraction for most FPS titles. There are a few that I would recommned though.

Bioshock, imo has the best single player FPS experiance. Yes, better then Half Life. But I'm in the minority here. I heard some people recommend the orange box to you, but if your a ps3 only owner, then stay away. It's crap. It's buggy, and the load times are even worse then the 360 version which were more then long enough. It loads and brakes up the action too frequently and for some reason, sometimes even in action packed parts and really throws off the flow of the game. I find this to be a HUGE problem and find it hard to recommend any version really, but the ps3 version is just terrible.
I also heard COD4 thrown about, but it is just too short to recommend as a campeign only title. It took me 6 hours max for my first playthrough.
Resistance has a decent story and length and so I can recommend it but not so much the 2nd if you don't want mp.
Killzone 2 has a decently lengthed and fun single player but look elsewhere for a story. If you can get past the non existant story though it really is one of the best shooters out there. Also, it's worth note that it has bots matches if the main reason you don't want mp is to play with other people who will be better then you, the option is always there to play bots and you can put the ai setting on easy.
Like was said, if you can consider Fallout 3 an FPS, then it is a must. Great length, great story, great everything really.
Borderlands which comes out next month may be worth looking into also as it's an FPS with a heavy rpg element. Think FPS meets Diablo.
Finally, if you are just looking for shooters in general, Uncharted and MGS4 get my highest of recommendations.