One example is the 'Cylons' in 'Battlestar Galactica'. They are mechanical simulacra that resemble humans in many ways. They have their own consciousness and motives, which makes them complex simulacra in the science fiction world. Another example is the 'hosts' in 'Westworld'. These are highly advanced simulacra designed to interact with human guests in a simulated wild - west environment.
The 'androids' in 'Alien' are also simulacra. They are created to perform tasks but end up having their own problems and interactions that are central to the story. In 'The Matrix', the virtual world itself can be seen as a kind of simulacrum. The people living in the Matrix think they are experiencing the real world, but it's all a computer - generated illusion. This is a great example of how simulacra can be used to create a whole new level of reality in science fiction.
In the novel 'Do Androids Dream of Electric Sheep?', the androids are simulacra. They are so human - like that it's difficult to distinguish them from real humans. This exploration of simulacra in the book also delves into themes of empathy. The idea that these simulacra might have feelings or a need for empathy, just like humans, is a fascinating aspect of this science fiction work.