The download version is the original version without the setting changes. The online version is Version 1.01 with the settings that you can change. For whatever reason, itch.io doesn't allow me to display a single file as both playable online and downloadable, it's either one or the other. My latest version for all my games will be the online version while the downloads will be the previous versions. I know that there is a way that some people have been able to download my online itch.io games even when it's only displayed as playable online but I don't know how they do it.