I make games all the time for myself, sometimes using copyright protected images.  But I can&#x27;t share the source code or publish the game in Google Play if I do that.<p>If I want to share or publish, I have to use free stuff or make it myself.  If I want to use copyright material and publish it, I need permission and a contract with the owner of the IP, a license or agreement of some sort to use their stuff.<p>All this applies to everyone, not just the US, if you want to do business.  If it&#x27;s just for fun that&#x27;s fine but you can&#x27;t distribute it in anyway, including github.