Yanderetale

Yanderetale is a spinoff game by YandereDev. The game can be downloaded here.

The game is a homage to Undertale. In Yanderetale, the player plays as Yandere-chan, battling Oka Ruto in a similar style to the Undertale boss battle with Sans.

The game was released on October 30th, 2016 for Halloween. It was showcased in the video "Yanderetale Genocide Route - Oka Boss Battle".

Trivia
Yanderetale is the second game released by YandereDev for Halloween, after Yanvania: Senpai of the Night.