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In the style of games made the 8-bit generation of game consoles & computers, or sometimes authentically created to run on original hardware. Common 8-Bit consoles include the Nintendo Entertainment System, Sega Master System, and the Commodore 64

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.