During play of a casino game a hidden bonus feature unknown to the player
occurs, although the existence of the hidden bonus feature may be known. The occurrence
of the hidden bonus feature may be at a random statistical frequency or other event.
When the player inputs a correct response to the hidden bonus feature, the player
receives an additional award. If a correct response is not received or if the hidden
bonus feature is ignored, the player does not receive any further award. The hidden
bonus feature does not affect the outcome of the play of the casino game.
