Explore Downloadable games with code under GNU General Public License v3.0 (GPL) tagged Shoot 'Em Up on itch.io. Shoot 'Em Up or shmup games are a subset of shooter games where the player continually moves forward while waves of enem · Upload your Downloadable games with code under GNU General Public License v3.0 (GPL) to itch.io to have them show up here.
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