All aboard the Bullion Xpress for a high-stakes heist adventure on a 5x4 grid with 20 fixed paylines. The game is centered around collecting gold bars and triggering the Gold Rush feature, where special money symbols land with values that can be collected. The Free Spins round is activated by landing three or more Scatter symbols, granting players a set number of free spins with an enhanced chance of hitting the Gold Rush. This volatile journey offers the potential to amass fortunes, delivering wins up to 10,000 times the stake as the train speeds towards riches.