To reach the SteamSpin feature, a bonus area must be unlocked by landing a Wild symbol on any position of the corresponding reel below. In the SteamSpin Charging stage, which comes next, at least one of three gauges needs to be charged up to x10 through scoring Multiplier Wilds.
That’s when the main thrill of the ride happens! All multipliers from the meters are added together and a single spin is played only on the bonus top area. Outcome of that spin is multiplied by the total value. Red Hot SteamSpin is something every passenger dreams about, as it instantly triggers the feature with maxed out multiplier of x33.