Deploy different troops, rescue humans and fight aliens in this 2D side-scrolling shooter with mouse and keyboard (WASD) controls. Earn money as you advance, so you can buy more and better troops.
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City Siege 4 Alien Siege Walkthrough
City Siege 4 Alien Siege is a dynamic shooting game. Check it out here on CrazyGames.com in your browser for free. This addictive shooting game is made with Flash to run flawlessly in modern browsers. City Siege 4 Alien Siege has been played by 49014 people and has received a rating of 9.1 / 10 by 598 people. If you like to play City Siege 4 Alien Siege, check out our other shooting games such as City Siege 3: Jungle Siege FUBAR Pack and City Siege 3.
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