How much the player is allowed to watch the complete ending depended entirely on how many gems they collected, with each gem adding 3 seconds of viewing time. The game had an unique mechanic involving the ending sequence and the collection of 52 'golden gems,' special items that could be obtained by performing special tasks within the game's levels and including shaking certain enemies, projectiles or bits of scenery, beating mini-games in record times or clearing a stage without being hit once in the case of the several boss battles.

Shaking in particular has a wide range of effects such as causing enemies to drop gems or causing a projectile to grow larger before throwing it back at an enemy. The game is a side-scrolling platformer in which Marina's primary abilities are grabbing, shaking, and throwing objects as a means to solve puzzles and defeat enemies. On her journey, she meets the citizens of Clancer, takes part in a Olympic style mini-game festival, fights agents of the Empire and faces off against the Emperor himself.

Upon realizing that the Professor has been kidnapped, Marina sets out to stop the Empire and rescue the Professor. On a visit to planet 'Clancer,' Professor Theo, creator of Marina Liteyears, is kidnapped by the mysterious Empire while Marina is out. One of the first 2D action games on the system, the game received mixed reviews. It's up to Marina to save Professor Theo and the people of Clancer from an imperial invasion. In the game, the player controls Marina Liteyears, the robotic maid of Professor Theo, who is kidnapped while visiting the planet Clancer. Mischief Makers is an action-platformer for the Nintendo 64 developed by Treasure.

Mischief makers