Yes, it is. The software developer Yggdrasil Gaming, which is behind the creation of this slot, has proven itself to be a reliable provider of games over the years. The firm operates with several permits, including one from the UK Gambling Commission. The UKGC is considered the best online gambling licensing body, which goes to show that Jokerizer has been tested for fairness and that every player has a fair chance at winning. Also, Yggdrasil Gaming partners with gaming sites that have good reputations and have impressive licenses of their own that prove their fairness and safety.