A method, apparatus and computer readable storage to implement a blackjack wagering game in which the player must make a main wager and a mandatory extra wager. The player is offered an advantage on the main wager thereby providing the player a return on the main wager itself that may be greater than a 100% return. If a condition is not met, then the player automatically loses the extra wager, otherwise the player wins the extra wager if the main wager won and loses the extra wager if the main wager lost.
CASINO ENTERTAINMENT SYSTEM WITH MANDATORY ADDITIONAL WAGER TIED TO A PREDETERMINED CONDITION