+A "shoot 'em up" (shmup) is a [video game](/wiki/video_game) subgenre where the player controls a lone protagonist or vehicle, engaging in combat against large waves of enemies by firing projectiles. These action-packed games often demand quick reflexes and feature a fixed, vertical, or [horizontal scrolling](/wiki/horizontal_scrolling) screen.
+## See also
+- [Action Game](/wiki/action_game)
+- [Bullet Hell](/wiki/bullet_hell)
+- [Arcade Game](/wiki/arcade_game)
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