Batman: Revenge of the Joker Super Nintendo

This game appears to be complete, though it becomes evident very quickly as to why it was likely not released. Probably the best comparison of the gameplay would be Total Recall, though that might be a bit unfair as it is probably beatable. The game is a platform shooter, with a couple of side-scrolling shooter levels thrown in. The extreme difficulty and poor level design hampers what could have been a worthy upgrade of the original NES game.