Row upon row of nasty aliens marched across the screen firing their weapons at you in this arcade classic. The idea of Space Invaders was to shoot the aliens out of the sky whilst dodging their bullets and hiding behind some knid of basic shelters.Gradually the shelters eroded from the continual assault and the aliens marched nearer and nearer to the earth. And is if that wasn't enough the aliens began to move faster and faster making them extremely difficult to pick off.
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