Modern casino chains offer a variety of contents and invest a great deal in attracting and retaining customers. In this sector, organising additional contents to enthuse visitors is one of the prerequisites for retaining the leading position in the market. Gaming fans are the target group that will always be interested if you provide participation in a prize game as additional contents. Within casinos and betting companies a range of concepts can be applied, as an example: prize game in which you have to participate by playing. Casinos and betting companies customers, under particular rules of the game, can receive a prize coupon which enables them to find out on the spot if they have won a prize or a valuable voucher. Participants have on offer an option of registering for additional draw for the main prize. This strategy would provide regular players with an adequate prize and secure occasional visitors as returning customers.