Some Japanese dating sims may allow the player to have romantic or sexual relationships with characters in their teens.
The degree of sexual content varies, but may often include intercourse.
The censored version contains far more endings and new added scenes due to the absence of sexual scenes.
This gives the games more replay value, since the player can focus on a different girl each time, trying to get a different ending.
Dating sims such as Tokimeki Memorial often revolve almost entirely around relationship-building, usually featuring complex character interactions and branching dialogue trees, and often presenting the player's possible responses word-for-word as the player character would say them.
Dating sims such as Tokimeki Memorial, and some role-playing games with similar relationship based mechanics to the genre such as Persona, often give choices that have a different number of associated "mood points" which influence a player character's relationship and future conversations with a non-player character.
These games often feature a day-night cycle with a time scheduling system that provides context and relevance to character interactions, allowing players to choose when and if to interact with certain characters, which in turn influences their responses during later conversations.