Waterworld is a prototype version of a Sega Genesis game based on the movie Waterworld, released in Europe. Prototypes are pre-release versions of games that often contain bugs, unfinished content, and may deviate significantly from the final product. The release of this prototype allows researchers and fans to see an early stage of the game's development, providing a unique glimpse into its creative process. More information on the specifics of this particular prototype's differences from any planned final product would require in-depth investigation. 

Waterworld (Europe) (Proto)

Warrior of Rome II (USA)