Zynga's success is based on marketing. Automated viral marketing, to be precise. Not on design.
I've always said that marketing is the most important part in determining whether a game is popular, and furthermore that traditional games not published by Nintendo have utterly failed to be marketed due to chasing down an ever-dwindling niche.
The question of whether their popularity has to do with the game's design would lead only to the same conversation that has been going on continuously in the aftermath of GDC, and it would be tiresome and involve flagrant abuse of the term "Skinner box."
I've always said that marketing is the most important part in determining whether a game is popular, and furthermore that traditional games not published by Nintendo have utterly failed to be marketed due to chasing down an ever-dwindling niche.
The question of whether their popularity has to do with the game's design would lead only to the same conversation that has been going on continuously in the aftermath of GDC, and it would be tiresome and involve flagrant abuse of the term "Skinner box."