About Stadium Events

Bandai created the Family Trainer and sold it in Japan. They created 10 games for it including one called "ランニングスタジアム" (Running Stadium)(1986). This game was renamed "Stadium Events" and packaged with the peripheral, which was also renamed "Family Fun Fitness", and test marketed by Bandai in a limited number of Woolworths departments stores in North America (1988). Nintendo then decided to purchase the North American rights to the peripheral and games. The Renamed them yet again to "Power Pad" and "World Class Track Meet" and recalled the previous packages (1988).
World Class Track Meet and Stadium Events are the exact same game, sold in different packages. The Stadium Events package is the rarest licensed NES game ever be released for public sale with only 10 known NIB (new-in-box) copies and 300-800 used 'in the wild' and has sold for up to $5,600.01.

What does "NIB" means ?

Just for you to know, one copy of this game is currently on sale on a famous auction sale website.