Just wondering really… Still a massive noob and don’t know how to do much with GDevelop, but I’ve been playing around with the example games and going through some simple tutorials so I’m having fun with it. 
But yeah, what’s the deal with these art assets? Who made them?
e.g.
Is this true even for commercial games? If they came from Open Game Art are these images the ones that were listed as CCO?
They should all be free to use, since that’s the point of the open game art website. Commercial wise you’re probably not going to want to use assets that are floating around the Internet for a game you make money on, but they are certainly great for using until you either purchase/replace them. 