<p>a short <a href="http://en.wikipedia.org/wiki/Computer_animation" title="Computer animation">computer animated</a> film by the Blender Institute, part of the <a href="http://en.wikipedia.org/wiki/Blender_Foundation" title="Blender Foundation">Blender Foundation</a>. Like the foundation's previous films <i><a href="http://en.wikipedia.org/wiki/Elephants_Dream" title="Elephants Dream">Elephants Dream</a></i> and <i><a href="http://en.wikipedia.org/wiki/Big_Buck_Bunny" title="Big Buck Bunny">Big Buck Bunny</a></i>, the film was made using <a href="http://en.wikipedia.org/wiki/Blender_%28software%29" title="Blender (software)">Blender</a>, an open-source <a href="http://en.wikipedia.org/wiki/Free_software" title="Free software">free software</a> application.</p>