This is an animation I have created from my ray casting game Anarch, showing the rendering of a single frame. I have created the game completely myself from scratch, including assets, and have released it into public domain under CC0.
<a href="//commons.wikimedia.org/wiki/User:Drummyfish" title="User:Drummyfish">Drummyfish</a>
<span class="int-own-work" lang="en">Own work</span>