Most of my pics and all animations are from free and OpenSource puzzle games I created. You can walk around and interact within these worlds, hear the sound of the surf and watch trees sway. In AdaGate you can search for clues to the fate of an American heroine.
Not only are they NOT copyrighted, they can never be! The copyleft (GNU GPL) is one good way to aspire to keep lawyers out of our lives.
Here are my game links: https://sourceforge.net/projects/X/
where X represents any of the following: adagate, rufasgate, rufasslider, rufascube, rufaswap, sevenslider, worldcupsokerban, rufasok