Arty Alien Shooter, which is a shooting game on www.flash-game.net. An unidentified flying object (commonly abbreviated UFO) is a popular term for aerial phenomena that are not readily identified. Research by military and civilian groups shows that after investigation UFOs are generally identified either directly or by applying Occam’s Razor. Therefore some, such as the USAF, who originally invented the term in 1952, define UFOs as only those objects remaining unidentified after scrutiny by expert investigators, while other definitions call something a UFO from the time it is first reported as being unidentified. Your duty is shoot those aliens from the UFO. Be careful, cause you don’t understand their language, take care!