Sparkster is a 2D side-scrolling platformer starring Sparkster , the eponymous hero from Rocket Knight Adventures. It has completely different levels, enemies, and gameplay mechanics compared to the Genesis title, making it a spin-off in the series.
The game follows Sparkster, an opossum carrying a rocket pack on his back, as he chases after a girl and her elderly captor who are taken aboard their airship. Sparkster can move around, duck, jump, and hang from branches or rails.
Gameplay involves moving around, ducking, jumping, and using the L and R buttons to dash left and right in a circle of fire. Holding down the attack button powers up a rocket meter, which can be used for different actions when full, such as dashing left or right, or a stationary attack.
The game consists of nine levels, with two of them only accessible on higher difficulty levels. Sparkster collects diamonds for points, defeats robot enemies, and gathers apples to restore his heart meter near the top of the screen. The gameplay is mostly platforming, with some sections where Sparkster rides a robot bird or flies in the air like a vertically-scrolling shooter.
All levels feature a level boss and several mid-level bosses. The game supports a password system for replayability.