I've found canvas to be more than powerful enough for my 2d game http://www.towerstorm.com http://www.towerstorm.com even with hundreds of animated minions and

I've found canvas to be more than powerful enough for my 2d game http://www.towerstorm.com http://www.towerstorm.com even with hundreds of animated minions and thousand of bullets moving across the screen. I'm using the impactjs engine which has made things easier as it has a few of these tweaks built in. Multiple canvas layers is an awesome idea, as things such as the game background never change so it's a waste re-rendering it every frame. will try it out soon and see how it goes.