Anyone remember these? You had a little plastic arena (similar to the one you get with Hungry Hippos) with 4 ports/stations into which you slotted your tops. Each top had a thread wound round it that was attached to a plastic "key"-like handle that stuck out of the port - you and your opponents simultaneously pulled the keys out and the tops spun and"battled" together - last top remaining upright was the winner. I seem to remember each top had its own name, like "Twirling Tim" or suchlike. I loved mine. I remember the telly advert for them, the tag line was "It's in the wrist action!".