High volatility denotes the chance to win big and/or plenty of features. However, it also causes you to suffer more losing streaks. ELK Studios gives both Cygnus and Io an 8/10 volatility rating. Although not the most-volatile superslot games, they’ll still put you through plenty of cold streaks. You may not mind this aspect if you have a large bankroll. But you’ll definitely feel the impact if you don’t have much money to bet.