Pac Man mosaics <a rel="nofollow" class="external text" href="http://www.space-invaders.com/bbo5.html">BBO 24–27</a> (from left) in Bilbao near the Guggenheim Museum
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/73864070@N00">kurtxio</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/73864070@N00/2280690723/">Space invaders</a>