I know they exist, but I've not really given attention in depth to the relevant posts. A friend of mine has played the game and he's quite enthusiastic about it, but my son has also played it, and his conclusion was "Don't bother." So I don't know.
The thing that really made me hesitate about the game is that Ubisoft (a) didn't bother to get it right, and (b) withdrew support for it so quickly. It paints Ubisoft in an EXTREMELY poor light. They haven't even got the excuse that they were going down the tubes like 3do did — although if that's the way they behave, that might not be a bad idea.