There are certain staples of childhood toys that we'll remember forever and think, "That was awesome! Whatever happened to those anyway?" It could be any of those decade fads like Types
Classic: The original kind of game, this one is probably more for the nostalgic than any other reason. It was originally created by Ideal. They were released post Star Wars as Battling Spaceships.
board game keychains.
Bakugan Battlers: A toy that many might refer to with the phrase, "When I was your age we had booster packs.
Beyblade: These are Japanese spinning tops also based on an anime series that were released through Hasbro for international sales.
starter packs that come with a top, launcher and controller.
Makeshift Versions
If you're having trouble finding a battling top set, simply just buy an arena and separate tops. The benefit of finding your own tops and creating a battle arena is that you can use whatever tops you want, not just the fancy ones that the game requires. Sometimes going old school is the best thing anyway. For example, you can't rock a Batman one!