Here are the slides from Andre Luis Anastacio's presentation on using Phaser with Opal.

<script async class="speakerdeck-embed" data-id="b7873dc4e6d64c2dbe6c81ea870de4fd" data-ratio="1.33333333333333" src="//speakerdeck.com/assets/embed.js"></script>

Slides on Speakerdeck