Game still works as I just tested it. It took a while to load, but it does work. Try leaving it for a minute, see if it eventually loads, or try using another browser (I recommend Chrome). This file does contain a lot of stuff, so how long it takes to load has always been an issue. If it still doesn't work on your devices, I can only suggest watching the video version instead.
Additionally, if these older animations do break, there is nothing I can do to fix them as the software I used to make these old works is no longer functional.