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Games that try to simulate real-world activities (like driving vehicles or living the life of someone else) with as much realism as possible. Simulators generally require more study and orientation than arcade games, and the best simulators are also educational.

Dystopia is a very dark future, the opposite of utopia. May contain, but is not limited to,  themes like chaos, pollution, censorship, dictatorship.

Science-fiction. Commonly including things like aliens, advanced technology, and settings of outer space or distant planets.