The best California online casinos are social casinos, as real money online casinos aren't legal and, effective Jan. 1, 2026, sweepstakes casinos are banned. Below, we review the best social casinos available to players in California.
Top California online casinos
Horseplay offers a variety of different casino games, but instead of determining winnings by a random number generator (RNG) like most sweepstakes casinos, it uses real horse race results.
Polymarket is the world's largest prediction market site.
Kalshi is a US financial exchange and prediction market listing various events, from sports to politics and entertainment available in most states.
- Good VIP program.
- App available for iOS and Android.
- 100+ games to choose from.
Gambino Slots offers over 130 games to choose from and brings a social element that stands apart from other casinos.
- Great social casino.
- Over 700 games to choose from.
- Virtual coins instead of sweep coins.
BetRivers is well known for it's sportsbook, but it has over 600 video slots available in it's social casino.