Minor Undertale spoiler ahead!
If you like Yandere Simulator, you probably have heard of Yandertale, aka Oka Boss Battle. It’s a minigame like game that is separate from the original game of Yandere Simulator. It is a reference to the game Undertale and one of the final bosses Sans, and plays a lot like it. Or so I think, I havent finished Undertale yet. (Don’t get mad please!) YandereDev-senpai made it for Halloween. Here’s the official video:
You can find the link to download the game at the Yandere Simulator website.