The censored version contains far more endings and new added scenes due to the absence of sexual scenes.
The sequel to Kaleidoscope Dating Sim 1, here you play as Soffie, a beautiful girl who ends up in the Dream World. In order to leave the World, she must find a Soul Mate.
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.
There are also GL games, which focus on female/female relationships, and BL Games, which focus on male/male pairings.
The term "dating sim" is also often used incorrectly in English as a generic term for romance-driven games (ren'ai games), a subject matter which is stereotypically associated with the visual novel genre.
In fact, many romance games are Visual Novels, which is a much different game style.
(See for example, the difference between the series, which is very close to a Visual Novel style of gameplay, and the DOA Xtreme series, which is the closest thing to a true Dating Sim with mass-market appeal in the US.) If the game plays out like a Choose Your Own Adventure, that's a Visual Novel.
Dating sims, or relationship simulation role-playing games (RS-RPG), are a video game subgenre of simulation games, usually Japanese, with romantic elements.
They are also sometimes put under the category of neoromance.
The technical definition of a dating simulation game, known as a romantic simulation game in Japan, can involve several technical elements such as a time limit, several statistics such as looks and charm which can be boosted through exercise, or an "attraction meter" which can increase or decrease depending on one's decisions.