What should i use as a graphics engine and...?

a physics engine in my games that im makeing. I am writing the interface in c# useing a windows os. the game is goin to be a fps.


thanks for all the help.

What should i use as a graphics engine and...?
I'd suggest the Unreal Engine. You can go to their website (just search through yahoo for it) and download a free version, or if you want to make money off of it, you can download a licensed version for a good chunk 'o money.