There's nothing you can't make yourself that appears in another language.
I've tried to make AI using java before, based off what I'd done in Prolog. I thought it would be a bitch to code. However, I just had a couple of methods that did a lot of the grunt work, taking it out of the main methods, and it worked wonderfully.
You may need to reinvent the wheel, but there shouldn't be much you can't do in C# that you can in F#.
note: I've never heard of F# before, but it can't be that bad. I may/may not be blowing out of my own arse.
