Money Train is all about the Money Cart Bonus Round
 

Money Train is all about the Money Cart Bonus Round which comes into play when the bonus symbol appears on reels 1, 3 and 5. Once triggered, สล็อตpg the game will take you to a different train cart with a new reel configuration where you'll see 20 individual symbol positions. The bonus round always begins with 3 spins and each time a new symbol hits one of the individual positions, the spin count resets. The bonus remains active as long as new symbols appear on the reels during your 3 spins.