So, after seeing that the game seems to work for others, I did a little more reading and realized there was a compatibility version.
That version WILL launch from the itch desktop app on Windows 11, but it will be low fps - as well as low fps in the browser. So, that sucks! :c
But then I tried this version, again, in the browser (which I didn't last time), and realized it runs quite well and smoothly!
So, between the two versions, I highly recommend playing this one in the browser (firefox, in my case). YMMV as to whether it will run in other setups or platforms, in which case the compatibility version may be a better option, for you.