Monster in My Pocket: 1992
Developer: Konami
Genre: Action
Monster in My Pocket Game Manual

Warlock, wanting to have power and rule over all the other monsters, creates a shrinking spell to use as punishment for any who chooses to oppose him. As time goes on, all of the monsters choose to join his side – except for Vampire and The Monster. However, the spell was miscasted – causing all of the monsters to shrinking in size. sends out his henchmen, led by Spring Heeled Jack, Bigfoot, Kraken, Gremlin, and Medusa while Vampire and The Monster are watching TV in the Miles home. They must fight their way through the upstairs and kitchen of the home, the street, and the sewer; they emerge in a construction site and an Orientalist garden before fighting Warlock at Monster Mountain, although that’s not the end of the game.

Vampire and the Monster’s abilities in the game are the same (though 2-player simultaneous action was an option): they can make an attack that can extend slightly beyond their bodies with a bit of a blaze, and they can make a double-jump from the height of their jump, something that has since become a common move in many video games.