Dating Sims or Romance Simulation, most common objective is to achieve a romantic relationship, usually choosing from among several characters. These games often involve raising stats that reflect the player's skills or feature complex character interactions and branching dialogue trees.
Sub-genres
Bishōjo Game
Features a male protagonist developing a romantic relationship with one of several female characters.
Example:
Otome Game
Features a female protagonist developing a romantic relationship with one of several male characters.
Features a gay male protagonist developing a romantic relationship with one of several male characters.
Example:
Girls' Love / Yuri
Features a lesbian female protagonist developing a romantic relationship with one of several female characters.
Example:
Eroge
Features more adult content than is usually the norm, sometimes to the point of being borderline porn. May feature sexual intercourse with characters in their teens and full nudity.