Because you only need to activate the 'Roll Expansion' feature, you won't be asked to leave a piece of your phalanx there to reach the 7,776 different ways to win. At just 1 cent per line up to 30€ for the most daring, you can start the reels with a bet as low as 0€10. Basically, you start with 243 different ways to win. With every re-roll, you can easily increase the number of ways you can win by leaving one of the many keys. With the latter, you can open the padlock to free a few more squares that were previously enclosed by the green smoke fog... 2 squares freed and that's 405 ways.... With each subsequent relaunch, the halo of smoke will gradually take its place. Numerous rewarding symbols with different skulls, such as the 'Mystery Symbols', the 'Bonuses', the 'Scatter' and other 'Wilds' bring some colour into this gloomy universe for those who are looking not only for the fun of the game but also for an interesting return. With just 3 well-placed 'Bonus' padlock symbols, you get 10 free spins. Get 5 bonuses and receive 30 spins! The appearance of new keys increases the multiplier to determine which new symbol will give you a 'big win' or even a 'massive win' at the end of the bonus.