Before the Free Spins bonus round in Zombie Circus begins, you’ll be asked to pick from a number of zombies on your screen. The Zombies you pick will determine how many free spins you’re awarded (either 5 or 10), and it will also determine which symbols will be transformed into wilds. For the duration of the bonus round, these symbols are permanently wild – thus increasing your chances of forming a win and giving you a better chance of walking away with a respectable hit!