1) Download the archive by clicking the provided link supernova-shards_win64_immutable.zip
2) Unzip the downloaded file — right-click on it and select “Extract All” from the context menu
3) Run the “Supernova.exe” file. If Windows displays a warning message — click “More info”, then click the newly appeared “Run anyway” button.
If you’re wondering why you have to deal with this blue window, it’s because of Microsoft’s greed — we can’t afford such an expensive certificate yet.