Snake Rattle 'n' Roll

Snake Rattle 'n' Roll features two snakes (Rattle and Roll) making their way through 11 isometric levels . The object in each level is to eat enough "Nibbley Pibbleys" – small round creatures found throughout each level – to gain enough weight to ring a bell on top of a weighing machine located at the end of the level; this causes a door for the next level to open. Players maneuver their snakes throughout the level with the control pad and are able to pick up Nibbley Pibbleys by lashing their tongue, which can also be used to attack enemies. The snakes' lengths increase when they eat; snakes grow more quickly when they eat Nibbley Pibbleys of their own color, and they grow the most when they eat yellow ones.

Located in each level are dispensers which randomly spew out Nibbley Pibbleys; however, they also spew out bombs which can damage the snakes. When a snake reaches a long enough length, the tail begins to flash, which means the snake is heavy enough to exit that level. At that point, they must find and jump on the scale to ring the bell and open the exit door. Each level contains various obstacles and enemies.

Players lose a segment from their snake if they are hit by an enemy, and they lose a life if their snake runs out of segments. Players can also lose a life if their snakes fall too far, the timer runs out, their snakes touch a sharp object, or if they are squashed by an object from above. Also, if they remain in some bodies of water for too long, a shark will attack. The game ends when players lose all their lives, but they have several continues in which they can restart the game from where they left off.

Players can defeat enemies by hitting them with their tongues or by jumping on them. Players can collect various items to help them along during gameplay, such as items that extend the length of the snakes' tongues, provide extra lives and continues, add time bonuses, award invisibility diamonds, speed up the snakes, or reverse their directional controls. Located throughout the game are "lids" (in the shape of manhole covers) which players can open to uncover Nibbly Pibbleys, items and extra lives, entrances to bonus levels, and sometimes enemies. Also located in the game are hidden warps which allow players to skip several levels and restart at a later point in the game.