LCD, Please
[EDIT] If anyone is wondering why it is rendering poorly in Firefox with Resist Fingerprinting enabled, that's because this page seems to serve the game from a random CDN on a different host.
<a href="https://v6p9d9t4.ssl.hwcdn.net/html/8469963/index.html" rel="nofollow noreferrer">https://v6p9d9t4.ssl.hwcdn.net/html/8469963/index.html</a>  in my case.<p>Because the canvas is attempting to read pixels, which can be used for fingerprinting, Firefox is blocking this.  But because it is being done in an iframe, there is no prompt until you open the iframe in a new tab at which point you can whitelist it, and it will work ok in the original iframe too.  Unfortunately reloading it in the original may give you a totally different host to whitelist, repeating the problem.  So, probably best to just play outside the iframe.<p>In order to do that I had to inspect the page and copy the url since I can't right click on the game iframe to choose open in new tab, probably because it is capturing that.<p>Oh, you can also allow canvas fingerprinting, but that seems like a bad idea - maybe in a separate firefox profile just for sites like this one..