Before you download any old build, you must understand a critical technical issue.
Because the keyword is often searched by younger users, malicious actors have flooded the search results with fake files. Here is the truth:
: An alternative secondary archive that specifically lists older prototype versions for easier browsing. Yandere Simulator Development Blog (2015 Archives)
These old builds may contain bugs that cause the game to crash, and some features might not work as intended. They are provided by the community for nostalgia purposes only. Tips for Running Old Builds
In the initial Unity launcher window, force the game to run in Windowed Mode rather than Fullscreen, and set your resolution to a standard 1920x1080 format. The Best 2015 Builds to Look For