The best free Space Games on 247
Date added: 11-06-2012
USOs Description: USOs stands for unidentified submerged objects. The object of the game is to save the world and defend your navy battle ship against a wave of alien flying saucers that have been hiding in the ocean for years.
How to play USOs: Use the arrow keys to move the gun around and press the space bar to fire
Game Category: Space Games
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