I have done that in the past, but I get burned by so many people asking me the difference between all the patches - having two seems to be the maximum people can handle without crucifying me over the number of downloads lol.
Proper versioning can help with that, IMHO.
<X>.<Y>.<z>
<X> is some major version number, 19.
<Y> is any update to version 19 which contains new content / features / images, would require a new major patch file that could update any 19 install of the game. In reality, there's no need to be scared of updating this number regularly should you so wish. It's just a number in the end. If you end up at 19.3 before going to version 20, that's fine, if you end up at 19.12 before going to version 20, that's fine too.
<z> is any solely bugfix release, which practically means only the html file got updated. If the game was on 19.3, a 19.3.c patch could update it; but if the local game was on 19.1.a then it would have to be updated to 19.3 first.
This is roughly what most open source software has gravitated to. <z> could be a letter or number really.
This seems to work well enough for the game Secretary for many years now. But indeed I'm just a punter throwing my opinion at the wall, feel free to heed it or not.
edit: if you are interested in browser font size units, here is a
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that css can use