One philosophy that is in a away similar to simulation hypothesis is Hermetism. According to it's postulates the Universe is the mental image of the Absolute, which is present in its every particle of the World, but at the same time is not that particle. It goes further: the thought creation is similar at every level, and the Man creates his own Universe and lives in his own thoughts. Everything vibrates, moves, has opposites, everything has a rhythm and everything happens in accordance with the Law of cause and effect. It also postulates reincarnation.