I've found ffmpeg is good for doing strange or random things like this. You just have it in a folder somewhere and when you want to do something like this you just do a search...
..and for what you want you might find the following command
ffmpeg -framerate 0.5 -i img%03d.jpg -c:v libx264...
It looks mixed honestly, and the original with just some simple modding can look pretty decent.
https://imgbox.com/g/zF00oXFfXh
It also has loads of interesting mods for it, along with some quality of life mods.
I remember giving that a go, though much preferred Halls of Torment.
The thing with games like that, or all roguelite/roguelike games, is there's always a point where I can't help asking myself if the time wouldn't be better spent in something else. Doing another run through Diablo 2, Grim...
https://sourceforge.net/projects/videosaver/
https://www.realtimesoft.com/videosaver/
Used to be sites that had videos for this, like those old wallpapaer sites, unfortunately going through my old bookmarks quick the ones I had are now parked domains. Still just searching video sites for...
If you want to run old obscure screensavers that no longer work on newer systems an option to consider is using video screen saver software (I think there's free and commercial versions), it simply lets you use videos as a screensaver. So you just find a video of the old screensaver you'd like...
Just incase anyone forgets, since media and the spergs are always complaining about X/Musk, meanwhile Meta...
https://www.bigtechontrial.com/p/instagrams-algorithm-recommended