A " shoot 'em up ", also known as a "shmup" [1] [2] or "STG" (the common Japanese abbreviation for "shooting games"), [3] is a game in which the protagonist combats a large number of enemies by shooting at them while dodging their fire. The controlling player must rely primarily on reaction times to succeed. [4] [5]
Games where the player stays at a fixed line on the screen.
Games that allow the player to shoot and move towards differently directions.
Games that combine shooting with platforming elements.