I was more than glad to donate to simply support the website, but is there any chance of macOS versions of these coming out?
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Will consider it, but as I don't own a mac... I'll look in to it, I think I can have Unity do a build and I could release something without testing it which should work...
A screensaver is pretty unlikely, but I can at least release the simulation piece. Doing a screensaver in Mac is very different then doing on in Windows.