When any wins are formed on the reels the symbols will explode, the surrounding symbols can then slide into new positions generating additional wins.
Additional symbols then drop down possibly creating more win and further avalanches and as the new symbols drop, extra rows are added up to a maximum of 8 rows which gives the maximum 262,144 ways.
The special Multiplier “X” Symbols appear at random but only become activated once they reach bottom row, any wins after this point have this multiplier value applied to them.
There is a maximum of 6 multipliers that can be activated at one time, doubling the wins each time to give the final huge 64x Multiplier.
The free spins are triggered when the special bonus symbol reaches the left side of the reels and awards an initial 7 free spins.
During the bonus round all 8 rows active are fully active (maximum ways) and the special Multiplier symbols are made sticky meaning they will stay around for the duration of the bonus round.
The bonus round can also be fully re-triggered awarding you even more free spins!