There is a free spins feature that this slot comes with and it is triggered by getting the symbols MINT to appear on the reels and this gives you 12 free spins with an increasing multiplier going up by 1x each time you get a win during the feature. However there is also an enhanced feature if you have finished collecting all the 40 bars door symbols but only after you trigger it again, while this time you will only need the INT as the M symbol is already saved for you at the end 40th gold bar.
How was my experience on this slot, well I can tell you it took a very long time to get all the 40 bars plus the last MINT? During this time I had 5 normal features as well. The best feature was the enhanced feature which happens to be the 6th feature for me on this game. That paid just under 100x, ok it was 93x. Not far from 100x but still under and I don’t know if I will want to go through the gold bar collecting again as it takes so many spins to complete this quest. The average feature has been 39x and the lowest 4x. I would have to say this slot is not for me and probably not for most people. But it has to be said that Big Time Gaming knows how to keep players spinning on a slot by locking them into a quest to play for the enhanced feature, otherwise it wouldn’t be worth it. During the enhanced feature you get still 10 spins to start but each win gives you x2 increase of the multiplier. By the way, the best base win was 60x.