If it's only video it's easier to make update only, because new video usually I put in new video folder. But every update it's not only about videos, new icons, logo, and other images are not structured like the video ones.. And I don't spend time flagging which icons/picts/ that are made for the newer version.
& Judging on how every update I always have one or few bugs, I think if I make "update only downloads" There will be more bugs than usual, and most of them are missing images and icons..
Sorry that's just limitations that I have.
Moreover, you don't have to download to play the game.. This awesome website
You must be registered to see the links
, is hosting my game and can be played online
Cheers