"WHO SHOT JOHNNY ROCK"

Johnny Rock has been shot by one of four people. You must get clues that will lead you to the killer. Visit all the places on the map to find these clues. The clues in turn lead you to the combination of Johnny Rock's safe. The key to the killer is inside.

A laser disc update can transform your "Mad Dog McCree" into "Who Shot Johnny Rock?" (description from the flyer)