
The player has the ability to kidnap, torture, poison, electrocute, matchmake, befriend, betray, and drown rivals, befriend other schoolgirls, play small mini games, access a street where the player can earn money by playing a maid cafe minigame, spend money at shops to buy different types of items, and more. Over the course of ten weeks, a different girl will fall in love with Taro, becoming a target for Ayano to eliminate.

The player controls Ayano Aishi (nicknamed Yandere-chan), an apathetic Japanese high school girl who has developed a crush on Taro Yamada, a fellow student nicknamed " Senpai". Performing murder results in loss of sanity, making Yandere-chan look increasingly disturbed and unstable, with the game's graphics and background music also reflecting the change. Yandere-chan (Ayano Aishi) with high sanity (above) and low sanity (below).
