As I remember, the protagonist is a boy staying in his parents' house consist of his mother, big sister(she works out), sister(same age as the PG), another female cousin that moved in((she reads book and probably looks like an emo) same age) The story is likely set during a summer, and there's also the PG's grandma and aunt, each in a different house. You mainly progress through each characters' story by playing their minigames. Some of the minigames I remember are: aunt's swimming race, grandma's volleyball or tennis(I'm not sure), mother's memory puzzle, sister's math quizzes, cousin's something about book minigame, big sister's running race. Oh and the engine is probably renpy. Thank you in advance 