“ In California Roulette, players bets on a typical roulette layout, but the winning pick is based on a card that’s numbered and coloured like a roulette wheel. Some casinos have a spinning card wheel that uses a flapper to rest on the winning card. Others draw three random cards and place them face-down on numbered regions of the table.
https://www.zddt.org/zddt-news/1794-zddt-conversations-hailed ”