Officially, Cosmo operator admitted the biggest payout of 1.4 million dollars to anonymous player (K. T.) on their site, though Casino Rewards "Millionaire's Club" hasn't reported about the win on their site. Nevertheless, I can share the average casino jackpot amount for January, 2020, the sum reaches 14 thousand dollars, majorly coming from slots as Alaskan Fishing, Gold Factory, African Quest, Break da Bank Again, or card games as Blackjack (Live Dealer version).