If the main site is down, the Development Blog provides alternative mirrors such as Mega or MediaFire.
Yandere Simulator is currently available as a for Windows PC. Because it is still in development, you can only find the legitimate version through the developer's official channels. How to Download Safely Yandere Simulator Free Download
To avoid malware or outdated versions, always use official sources: If the main site is down, the Development
The official launcher (available as a .zip file) is recommended because it automatically handles updates and file extractions. Important Installation Notes Download | Yandere Simulator Development Blog If the main site is down