Read the description of it, it has a link to play in browser, and it has had for a month!
Viewing post in Fuseborne Battle Royale jam comments
Thanks! Yes, there's a link to an online version in the game description (not in the jam entry description), but it wasn't clear for me whether https://itzdevilminty.itch.io/fuseborne-browser (which you didn't submit as a jam entry) is the same as the Windows game you submitted.