Is what? Angry Birds? It's an app. It can be added to Google Chrome as well as other Google- and android- (and even iPhone-)related things. It is playable offline, so it is definitely a sort of software, yep.
They used HTML 5 and WebGL to get a great game working (physics and all) via offline storage...it is awesome!
No wonder I sometimes feel so out of the loop when all you smart guys and gals talk about all that tech stuff....."physics and all"......well science and I just can't seem to get to along, and trust me.....I've tried Well at least now I don't feel so bad