The Mystery Symbols feature in the base game transforms random symbols into Major or Minor symbols after landing. The Free Spins feature has three trigger levels based on landing 3, 4 or 5 Scatters that start you at level 1, 2 or 3 respectively. As you collect Powered Wolves during the spins, it fills up meters for each symbol. When a meter fills up, that symbol is upgraded to the next major symbol in sequence. Each upgrade awards +1 extra free spin. The number of Powered Wolves needed to upgrade decreases as you move up in symbols.
Landing additional Scatters during the feature gives you more free spins. The Wild substitutes for all symbols except Scatters. You can buy into the feature by paying a multiple of your bet. The basic Free Spins cost 100x bet, while buying one and two symbol upgrades costs 250x and 500x bet respectively. Buying the bonus guarantees the feature will trigger.
Symbol
Three on a Payline
Four on a Payline
Five on a Payline
Wild (Wolf)
0.75x
2.5x
12.5x
Scatter (Moon)
0.25x
0.5x
1.25x