What makes this otherwise standard game so rare, is that just after its release, it was recalled. As an official third party title, Stadium Events made use of an accessory called the Family Fun Fitness Pad. It required the player(s) to run or step rapidly in order to complete each event. Upon its release, Nintendo decided to grant the game a first party production, recalling the scant initial cartridges that had been sent out.The game would later become “World Class Track Meet” and would be played with Nintendo’s own controller the “Power Pad”. Both became very common and were boxed-in with many NES consoles. But Stadium Events, the original anomaly, had snuck out in ever so limited numbers. 2000 copies is believed to have been the total distribution tally, but doesn’t consider how many of those were sold prior to Nintendo’s recall. Some have suggested that no more than 200 actually made it into NES owners’ homes. It should be noted that PAL versions were not recalled and are not
worth as much (even though many eBay sellers try to pass them off as rarities)