Robodemons (USA) (Unl) is an unlicensed NES game, meaning it wasn't officially produced or authorized by any major game publisher. The 'Unl' likely indicates that it's an unlicensed production.  Its gameplay likely deviates from the established titles in the genre, offering a unique approach to retro action gaming.  Due to its unlicensed nature, information on its development and creators might be limited or difficult to find. 

Robodemons (USA) (Unl)

RoboCop 3 (Europe)