The NES version of the game is unique from its computer counterparts in that it has on-screen hearts designating hit detection, but eliminates the two-player mode. The player is required to complete each level with a specific character. The initial levels, which you can complete in any order, are as follows;
Kermit the Frog rides an inner tube down a river, Fozzie Bear must escape a Fun House of desserts, Gonzo flies a spaceship and Animal drives a bumper car. After completing these initial levels, the player then controls Kermit the Frog, armed with a feather, in Dr. Grump's castle.[1]