This early prototype (Beta 1) of Sunsoft's Batman for the NES contains significant differences from the final retail game. Most notably, the final boss encounter and certain cutscenes were altered before release to more closely follow the Tim Burton movie. Prototypes like this provide insight into how licensed games were adapted for the market, with different enemy placements and early musical arrangements. It is an essential artifact for researchers and fans of Sunsoft's legendary 8-bit development era.