King of the Monsters is a two-player fighting game, in which the players take control of two gargantuan monsters and battle it out in different city locations.
The city gets gradually destroyed as the two creatures fight. The players can also interact with the scenery by picking up objects to use against the other player.
Gameplay involves using special moves, such as throwing objects at the opponent or using environment-based attacks, to try and knock them off a ledge or into the water below.