I've recently released a C64 game (https://marcogiorgini.itch.io/santas-rats-issue) - and I've decided to release its sprite resources as CC0 - so that can maybe help someone else trying to create a game for this specific platform - as a temp asset for some tests, or using them directly (changed or not) as characters.

If you use them, I'll be glad to know - but you don't need to inform me (or tribute me) in any way (even if that would be appreciated)