We've been playing mind soccer in my classroom at the very end of the day if my 3rd grade students beat me in the scoreboard game. Another way you can have the captains or other members of your class face off is with one of the lights that you can place anywhere, that when you touch them, they light up. I hope that makes sense. Anyway, my kids won today, and we played mind soccer reviewing our multiplication facts! It's really a great review and they beg for it.
I don't have a Smart Board, but I wonder if I could pull it up on my large screen and use my interwrite. Right now, I've been doing it with a good old blackboard and chalk. I do have a little magnetic soccer ball that I move across the field though!