The guide "Roulette" offers an innovative perspective on roulette strategy by integrating the psychological nature of players as a central component of the gameplay instructions. Developed by experts Manfred Kubny and Hans Linden, the Delta game for dozens and columns combines scientific approaches with entrepreneurial strategies. This textbook illuminates all essential aspects of the roulette game and provides a systematic introduction to the strategy that is also understandable for beginners. The authors place special emphasis on the emotional security of players and the protection of their capital, promoting a responsible approach to the game. Instead of advocating risky playing styles, the book offers a well-founded method based on mathematical calculations that highlights the chances of dozens and columns. The clear structure of the guide allows readers to easily grasp and apply the content.