One use case : You have a web version up that is low friction and gives people a taste of the game and you have a desktop version with additional content + abil

One use case : You have a web version up that is low friction and gives people a taste of the game and you have a desktop version with additional content + ability to have saves that you put behind a paywall. I think the famous vampire survivor game did this. FNF which is another game went viral with its web version and they're now working on a full release.