If the player makes a max coin bet of 10 coins per line, then he will activate the Ultimate X feature. If the player declines the Ultimate X option, the game will play like conventional multi-play video poker. The game is an optional feature to 3-play, 5-play, and 10-play video poker. I have a separate page for the single-line version. This page addresses the multi-line version of Ultimate-X Poker.
The thrust of the game is that if the player doubles his bet, and gets any paying hand, then he will also win a multiplier, to be applied to the following hand. Ultimate X is a video poker variation I noticed at the MGM Grand on February 15, 2009.