Zynga was founded in 2007 by Mark Pincus and achieved early success through social games on Facebook like Zynga Poker and Words With Friends. They pioneered the "freemium" model where games were free to play but players could spend money on virtual goods. This drove large audiences and revenue from heavy spenders. However, Zynga became too reliant on Facebook users and offered too many similar games. When Facebook changed its platform and players lost interest, Zynga struggled. After leadership changes, Zynga has rebounded by expanding to mobile, acquiring successful games, diversifying its catalog, and focusing on player retention.