I'd like to make a super basic one-button space invaders game on iPad via an offline webapp (using the cache.manifest and canvas). Enemies would fly by your ship and you simply press a button to shoot at them, no left or right movement. Before I begin development though I'd like to know if it will even perform up to snuff.
Does anyone have experience with making simple offline webapp games? Would such a game perform well? Would it support detailed image graphics (not just geometric basics)? All I need is basic Flash level game support/performance. Thanks!