OpenGameArt.org
200% Production
Credit line
"200% Production" by section31 licensed CC0: https://opengameart.org/content/200-production Author's attribution notice: No copyright necessary, but if you are feeling generous, credit Section 31 -Tech (http://s31tech.org)
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.