When searching for a , look specifically for:

Downloading a specific 2015 build of requires using third-party community archives, as the official Yandere Simulator website typically only hosts the most recent launcher and stable demo builds. Because these older versions are prototypes, they are often maintained by fans rather than the developer. Where to Find 2015 Builds

If you are looking for this specific build or more information on the game's evolution, here are the safest ways to navigate it: Finding Historical Builds