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City Siege 4: Alien Siege

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Life on alien planets may be hostile, and it’s your task to deal with it in a new addition to the hit series of free online shooting games. As the commander of space troopers you head the missions and are responsible for weapon upgrades and enrollment. Shoot the aliens while they are not watching and try to save all hostages from extraterrestrial plants. By the way, some of them are explosive. So, if you shoot the bomb plants, it may both help you get rid of the aliens and dig for valuable minerals. However, remember to keep your distance, because the explosive may hurt you as well. Play more free shooter games from the series on mobile and desktop versions of our site.

Control an alien shooter in a free online arcade game. Rescue the hostages and collect valuable resources to collect all three stars.