Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics
SalesBundles
Jobs
Tags

So is it public domain (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

Many thanks for advices! I will use them =)

Just to be sure. Is it correct that it is CC-BY4.0? I saw some situations when people chose CC-BY 4 in metadata but wanted something else...