Hello, it is possible to put it in HTML format but the problem is that the game contains more heavy things that were created at the time of development and it would run badly if it were put in HTML format, in the same way download the zip, unzip it and click 2 on the executable Shadows of Thalbor.exe with the samurai icon and put where you want it to download and if you get a warning that Windows protected your PC, click on more information and run it anyway.