[AndyJPartridge]

For me, the biggest problem I have trying to use HTML5/Javascript/CSS for a game is sound.

I can't get background music and sound effects working simultaneously under iOS using just those standards.

[ericmoritz]

is that a deficiency of the iOS browser or the HTML5 standard?

[AndyJPartridge]

iOS mainly: Sounds need to be triggered by touch events, which of course for gaming seriously restricts what you can do.

EG: No sound effect from an alien shooting at you.