Awesome stuff!!! And with a lot of potential for growth! I can totally imagine tricks, tackles and other moves, new fields and - why not - a single-player tournament!
It was a lot of fun, even with just bots. I only encountered two odd things. Sometimes the ball seemed to go inside, but, for some reasons, it wasn't registered as a goal. Also, at one point, the bots got stuck (see picture below), but I' sure it's just bound to happen from time time...
