<a href="https://en.wikipedia.org/wiki/Spacewar!" class="extiw" title="en:Spacewar!">Spacewar!</a> running on the <a href="https://en.wikipedia.org/wiki/Computer_History_Museum" class="extiw" title="en:Computer History Museum">Computer History Museum's</a> <a href="https://en.wikipedia.org/wiki/PDP-1" class="extiw" title="en:PDP-1">PDP-1</a>.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/35034362831@N01">Joi Ito</a> from Inbamura, Japan
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/35034362831@N01/494431001/">Spacewar running on PDP-1</a>