Cool, but doesn't work on Firefox 14 which is roughly a year old. Fair enough, you've stated "next generation". So I updated to version 21 and it worked.<p>The thing is, it was broken in Firefox 14, no error message or browser detection or feature detection, just a broken game. It's still a rough experience these HTML games compatibility-wise. I remember detecting older versions of Flash 10 years ago for games I was making then, and warning users they needed to upgrade. I wouldn't have been allowed to deliver a Flash movie that broke on earlier versions.<p>Needing to create an account to save progress shouldn't be needed what with offline storage, or even just a cookie to save where I'm up to.<p>The social media vibe is slightly overdone, I didn't expect persuasive sign-up prompting just to play. But there it is.<p>7 / 10