Defender is a legendary sideways-scrolling shoot-em-up - the very first of its genre - in which the aim is to pilot a laser-firing spaceship and protect humanoids stranded on the planet's surface from swarms of alien abductors. A long-range scanner at the top of the screen shows the positions of both the humanoids and the attacking aliens. The ideal strategy is to shoot down the alien ships before they reach the humanoids. If a humanoid is captured, the alien abductor can still be destroyed, but the player must then catch the falling humanoid and return it to the safety of the planet's surface before it falls to its death. If an alien is allowed to carry its victim to the very top of the screen, the humanoid will mutate, becoming a permanent part of the alien that captured it. This new and deadly mutation will then immediately join in the alien attack. The challenge becomes more intense as action progresses. Fighter ships and their mines will soon join the abductors. There are al...
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