Hello!
As I don't know how to leave a comment for collection (I guess it is impossible), I am writing it here....
I want to "discuss" your CC0 collection. Creators often don't know about metadata of projects and can't properly set it...
You can leave a comment here to support my proposal about making metadata visible for those who are interested in it https://itch.io/t/2919128/metadata-encouragement#post-7952450