Windows may give you a warning about unknown publisher it does not mean it's a virus, just make sure that you've downloaded it from the official website. Go to the new YandereSimLauncher folder and run YandereSimLauncher.exe.After downloading the archive, right click on it and choose 'Extract to YandereSimLauncher'.Go to the and click 'Download Launcher' link.If you have any issues with it, try downloading the archive with the game files directly. Please note that launcher was developed by another developer and sometimes may work unstable. You can find installment instructions for those programs in web. If you don't see 'extract' option when you right click on the archive, you need to download an archiver, such as WinRAR or 7zip. You may need an additional software to extract an archive in both cases. Downloading and extracting the archive with the game's files directly.There are two ways of installing Yandere Simulator: