The idea of Dangerous Dave came to John Romero under the influence of Super Mario. There are definitely similarities that are easily noticeable, such as the secret levels, the level design, the monsters, and the jumping.
Tell others what you think about Dangerous Dave in the Deserted Pirate's Hideout: did you play it? Did you like it or hate it? If you have problems running Dangerous Dave in the Deserted Pirate's Hideout, please read the F.A.Q. first.