Merge Master Superhero Battle is a strategy game that combines aspects of both strategy and action games. 

You are in the middle of a battle between two different armies. One of the armies is made up of various superheroes and monsters that you have collected over the years, and the other is a group of villains that you will have to defeat in order to move forward in the game. 

The battle is taking place on a battlefield that is the size of a city. You have to control the entire battlefield and ensure that the enemy does not reach the endpoint of the field.