Angry birds falls under none of the criticisms people make of zynga's output. It's a honest-to-goodness, (relatively) original and fun game. People play it because they like it, not simply because they need the dopamine hit.
Eh, it's a grinding game with intentional randomness added on top of a low-skill base for Skinner-box purposes.
It's not pay-to-win like Zynga games, but it is intentionally addictive to play.
