This game takes you to different areas where you have to clear out all the zombies. You're the only survivor of a world-wide infection and you have to continue to survive for as long as possible. To survive in this apocalyptic world, you need lady luck on your side since you don't have any other type of help available.
The battles have a simple development; below your character you have your life total, your attack power, defense, and other information (you also see the same information below your rivals). To defeat them, you have to tap the spin button you see toward the bottom of the screen. When you do this, the slots start spinning randomly and you'll earn bonuses according to how they line up. With each spin, you can add to your life, defense, or attack, while the zombies can earn more health, strength, or add more members to their ranks.
Each level has ten waves of zombies, and to move on to the next level you have to destroy them all. Once you complete each one, you get a bonus that lets you recover or improve to face the next wave. Make risky bets on the slots to win bigger rewards, but make sure you don't run out of money or you'll end up losing big time against the enemy.