King of the Monsters (キング・オブ・ザ・モンスターズ) is a fighting/wrestling game released by SNK in 1991 for arcades. It was later ported for the Super Nintendo and Sega Genesis by Takara. The game uses giant monsters that are reminiscent of Kaiju and tokusatsu characters.  

A sequel called King of the Monsters 2 was released a year later.

Players choose one of six monsters (four in the 16-bit ports) for battle, and two players can join forces to fight the monsters together. Battles end when one of the monsters is pinned for a three count or if time expires (in which case the player loses).

The game consists of 12 total levels (8 in the 16-bit ports) which takes place in 6 cities in a futuristic 1996 Japan. Each city is featured twice with the game beginning and ending in Tokyo. Other cities include Kyoto, Okayama, Osaka, Kobe and Hiroshima (the latter two are omitted from the SNES port. The Sega Genesis port only features Tokyo with the other cities being "Mega Port", "Dragon City", and "Castle City"). The player first must defeat all six monsters, with the last monster being oneself, but in a different palette. Then the player must defeat the six monsters again, in the same order, but this time in different cities.