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The outer planet has been invaded by aliens! Can you save humanity? Dive into this free-to-play online game where you fight back against the extraterrestrial invaders. Explore different planets, battle alien hordes, and use your skills to defend Earth. A thrilling adventure awaits in this arcade-style browser game! Tap to play now! alien invasion,save the planet,free online game,arcade game,hypercasual game,planet game,world game,adventure game,alien game,online game,browser game,fight aliens,outer planet,space game,arcade,hypercasual