mykerberos

I am unable to use it because all your videos are MP4 and Firefox doesn't play MP4

There is a company called Ludei (https://www.ludei.com/) who has built an amazing framework for HTML5 apps and games.

To prove how powerful their framework is they've published several games, here are some:

https://play.google.com/store/apps/details?id=com.ludei.slid...

https://play.google.com/store/apps/details?id=com.ideateca.a...

https://play.google.com/store/apps/details?id=com.ludei.demo...

Their games go faster and work better than many native games I have.