Well, most of the games were fangames with copyrighted characters, and they were free. I choose to donate since I wanted them to show up in my library because free games don't. Now, I didn't give away a lot of money, and that not the issue for me. The issue is that the games are gone, but then I guess I should had backed them up.
For what it's worth: if you paid for those games, there must have been good reasons for removing them; the creator would have needed to contact support and make a convincing case for it. So it was either that, or a takedown request (which is also not taken lightly on itch.io). I realize this doesn't help now. Just trying to point out that whatever happened, it wasn't done on a whim.