This is another version of the unreleased Spiritual Warfare game for the NES. The version number suggests further development and refinement of the game compared to the Beta version. The core gameplay and themes likely remain similar to the beta version, but the differences between this and previous versions are unknown without hands-on experience. The lack of official release information means the development team and publisher are also yet to be confirmed. 

Spiritual Warfare (USA) (Unl) (v5.1)

Spider-Man - Return of the Sinister Six (USA)