City Siege 4: Alien Siege is an online game that you can play in modern browsers for free. City Siege 4: Alien Siege Online is in the category of Shooting. This game has received 21842 plays and 69% of game players have upvoted this game. City Siege 4: Alien Siege is made with Flash technology, and it's available on only PC web. You can play the game free online on your Computer.
The fourth installment of the City Siege franchise and the first to be set on another planet.
If you want a better gaming experience, you can play the game in Full-Screen mode. The game can be played free online in your browsers, no download required! Did you enjoy playing this game? then check out our Boy games, Alien games, Gun games, Shooting games, Rescue games,