can i use them for free?
Yes, it's free to use, in your projects.
If possible, please share a link to your project if you use them. It would be nice to see them in play!
Is it CC0?
If yes, you should add the license into metadata for the asset packs:
"Edit asset pack->Metadata->Release Info->License for assets" It will increase the size of audience that will be able to find your art
Done! Thank you for the suggestion.
