NBA Fastbreak's backbox is quite fun thing. Instead of normal WPC95 platform hollow backbox with just a translite and lamps, the whole space is used to make this small hoops game. It's not terribly hard, but quite often it's a crowd favorite and a lot more entertaining than the passive ones, such as Big Guns' passive mini pinball.

Technically the whole thing is just a flipper mechanism attached to the plastic light box, one switch and a lot of lights.