The player has the option to activate the gamble mode on Grand X before each game. With active gamble mode the player has the chance to multiply his/her win. If the gamble mode is active, a screen opens when achieving a win, here the player has to guess whether the next card is black or red. At the beginning the total win is placed for bet, but the player has the option to bet only half the stake, resulting in having half of the win added onto the credit account. The bet is here called risk. The player can also see the displayed card colors of the seven previous gambles. When the player chooses black or red, he/she has the chance to double the win. The win can also be multiplied by choosing the suit, meaning hearts, diamonds, spades or clubs. When the player has made a decision, the card is uncovered. If the guess is correct, the player wins. If it was wrong, the stake is lost. The player can multiply the win with further gambles as long as he/she chooses the correct color. The player can quit the gamble at any time by pressing the COLLECT button, the win will then be credited onto his account. If the player loses, the game continues. Due to permanent attempts for improvement of our programs deviations in this manual and the supplied software can occur at anytime.