I just upgraded my firefox to 4.0. After installation on the start up page there was something flashy icon which brought me to this link https://demos.mozilla.org/en-US/?WT.mc_id=s4&WT.mc_ev=click
Ahh! more flashy inside. :)
I remember those days when I was kid and used to go cyber to play the miniclip games. It had most of the best flash games at that time. Small flash games would load in an instant, then the bigger ones lagged or took long times to open. Still there are many flash games available on the web.
So those things on the flashy website are made by HTML5, which I exactly don't know what it means but are great. No need to to install additional softwares like for the flash you need to download a flash player.
This website only requires you to have HTML5 supported web browser(new versions of Mozilla Firefox, Opera, Chrome, Safari, IE9). The best part is you can even run it on your mobile phones. Why it is that a best part? That means you can even play HTML5 games built for mobile phones. Anyway the performance in the HTML5 website directly depends on the browser you are using and having a better GPU(Graphics Processing Unit) also helps.
Think flash is still better ? Think again after viewing this website http://html5games.com/
Get to know HTML 5 better:
Meanwhile, Firefox 4 rocks. Mmm and Opera super rocks(hope \/,)