The Amazing Spider-Man and Captain America in Dr. Doom's Revenge! big box
Marvel Comics also released a comic book that was only available in the game package. It illustrated the plot leading up to Spider-Man and Captain America's mission to stop Dr. Doom.
The game's manual provided biographies on each character in a style similar to the Official Handbook of the Marvel Universe, and information about each character was used as a form of copy protection.
Edition: for Commodore 64