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Dating sims (or dating simulations) are a video game subgenre of simulation games, usually Japanese, with romantic elements. The most common objective of dating sims is to date, usually choosing from among several characters, and to achieve a romantic relationship.

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

Work centered on following a character through the ups and downs during a notable part of their life. There's often more of an emphasis on characterization, relationships, and a series of dramatic events than on strict adherence to conventional story structures and plotlines.