Parody World: Monster Party is an NES action game developed by Human Entertainment and published by Bandai in North America in 1989, famed for its quirky humor and horror pop culture parodies. Players control Mark, a boy who teams up with Bert, a pterodactyl-like alien, to save the Dark World from evil monsters. Mark can temporarily transform into Bert, and faces foes ranging from classic horror twists (mummies, zombies, Medusa) to bizarre original enemies and Japanese folklore-inspired creatures. Notably, its planned Japanese release was canceled; an unreleased prototype sold for ~¥483,000 at a 2011 Yahoo! Japan auction and leaked online in 2014. With its unique premise and creative enemy design, it stands out as a one-of-a-kind NES action title.