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Games in which the player shoots things to progress, usually with a variety of guns, and other times with bows and arrows.

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

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