Zynga is a video game developer located in San Francisco, California, United States. They develop browser-based casual video games which work in conjunction with social networking websites such as Facebook and MySpace.

Zynga games incorporate the social aspect of their partner websites by letting users group together in "crews" or "families" (depending on the type of game). Many games give significant bonuses to players with larger groups, and some features of their games are unavailable to users with small networks (such as in Mafia Wars and Pirates).