You wake up on a green hill, and against the background of the night sky, you look towards the front of the hill and you see a large and modern city with every building made of iron. This city is inhabited by robots or can be called artificial humans. You are the only human left in this city, and the other humans have been killed by the artificial humans The artificial humans know that there are still humans left, namely you and they are now seeking your whereabouts for their experiments.