FanDuel is one of the largest gambling and fantasy sports companies in the United States, founded in 2009. Like its competitor DraftKings, FanDuel started with daily fantasy sports (DFS), where players can create fantasy teams on a daily or weekly basis to win cash prizes. This form of fantasy sports became extremely popular in the US, especially among sports fans who were looking for a faster, more interactive experience than traditional fantasy leagues.

Since the legalization of sports betting in several US states (as of 2018), FanDuel is also active as an online sportsbook and casino provider. You can bet on all kinds of sports such as NFL, NBA, MLB, NHL, but also on international events such as soccer, tennis, and UFC.