The Free Spins Feature in ‘Steamtower’ online pokie is activated by the Stacked Wild landing on the reels. As previously mentioned, you will be given ten free spins to start off with. However, these can be topped up by winning additional free spins throughout the feature. The higher you climb in levels changes the multiplier value, which in turn affects all bet line wins. If you manage to make it all the way to the top of the tower, you will receive a bonus win of 1,000 coins. On floor one, two, and three, the multiplier sits at 2X. Whereas on floors four and five and six, it's at 3X. Then, on floors seven, eight and nine it's at 4X, and on ten, eleven and twelve, it's at 5X. On levels thirteen, fourteen, and fifteen it's at 6x. And lastly, on the top floor it sits at 7X.