You are playing Instant UFO Defender - on OnlineHTML5Games.com
The city is under attack by UFO Bomb Droids - You must stop as many as you can from breaching past the city walls! Use the military cannon to blast them back to where they once came. As time goes on, more and more UFO's will be deployed, so take care! Can you get the highest score and become the No.1 Defender?
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