How to play the game? Won't let me play on a rar
Try using a program like WinRAR (which should already be on your PC) or 7zip (which is free and even better than WinRAR in my opionion) to extract the files first.
Right-click the .rar, hover over 7zip, and click "Extract To BLab_v.0.22.8\"
or you could use breezip from Microsoft store