Dating sim characters
For example: in Fire Emblem: Awakening, pairing up two units in battle improves their relationship, which can grant "rank" upgrades in the Social menu.Upgrading a character's social rank unlocks cutscenes where character pursue romantic relationships or improve their friendships.The game plays with the expectations of genres: aside from the obvious change in expectations (you date birds), the game is very self-referential and plays with tropes inherent in video games.Hatoful Boyfriend shifts into a fighting style game during one potential suitor's route, and the second half of the full version turns into a dark, espionage thriller.Good interactions boost your meter, bad interactions reduce it.
Katawa Shoujo is described as a "a bishoujo-style visual novel set in the fictional Yamaku High School for disabled children, located somewhere in modern Japan." .
The good ending consists of the suitor confessing his/her love, as well as the possibility of a physical reaction (kissing, holding hands, sex, etc.).
The bad endings are typically only "bad" in the sense that the player does not woo the suitor--unlike "bad endings" of other games, death or other permanent consequences rarely happen.
Hatoful Boyfriend is a parody of the dating sim genre.
While Hatoful Boyfriend uses many typical dating sim characteristics and many character archetypes featured in dating sims, it is notable for one parodic option: all of your suitors are birds.