Monster Party came out in North America in 1989. An obscure platformer game with a cult following, this game tells the heartwarming story of a winged monster named Bert enlisting a young boy named mark to help rid his world of evil monsters with just his baseball bat. This game parodies horror movies with the look of enemies and various bosses. This game can be downright weird at times. A canceled prototype of this game was discovered in 2011, and a dump of the unreleased Japanese Famicom edition was released in 2014. A hack made converting the NES edition to the unreleased prototype can be found here.