BOOSTER BISON, charge ahead for big wins boosted by big multipliers. The game enters a special mode that is triggered by a powerful symbol appearing on the center reel.
- During this special mode, an improved free game feature can be triggered in which a multiplier up to 88x is applied to all wins in the free games.
- BOOSTER MODE continues as long as the BOOSTER MODE is displayed on the game screen.
- MYSTERY BONUS credit award is randomly won at the end of the BONUS and the MULTIPLIER BONUS.