How do you download this on windows?
click the download button for the file "HeavenStudioWin64.zip". You will need to extract the file contents of the zip folder once downloaded, but all you need to do is right click the zip folder and click extract all, then select the destination folder (it defaults to the location of the zip folder, usually downloads) and click extract. In the new folder, find the Heaven Studio executable file (usually marked as .exe) and run the file.