New Eden (Torchwood Mission Game)

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You may be looking for the human colony or the open space world.

New Eden was a research institute. It was infiltrated by aliens who were planning to take over the Earth. They were modifying DNA and implanting it in humans. When they were ready to start the invasion, they would use ultra-sonic soundwaves to activate the DNA, allowing them control over those people. (GAME: Torchwood Mission Game)