Rainbow Stacks Demo Slot by Revolver Gaming Free Play

Rainbow Stacks is an online Slot from Revolver Gaming.

Quick Facts

- Layout: 5 reels x 3 rows

- Paylines: 25 fixed

- Key mechanics: Jackpot Bonus (Hold & Win style), Re-triggering Free Spins, Bonus Buy

- Special symbols: Leprechaun (High Pay), Gold Coin Scatters, Black Pot (Jackpot Trigger), Wilds

How the Game Plays

Rainbow Stacks transports players to a vibrant mythical valley where Lucky the Leprechaun guards hidden riches. Developed by Revolver Gaming, the game features a 5x3 grid set against a lush Irish countryside backdrop complete with rolling hills and a flowing river. Winning combinations are formed by landing three or more matching symbols across 25 fixed paylines, starting from the leftmost reel. High-value symbols include leprechauns, four-leaf clovers, horseshoes, and pipes, while traditional card suits represent the lower pays. Wild symbols appear on the middle reels to assist in completing winning sequences.

Free Spins Explained

The Free Spins feature is initiated when three Large Coin Scatters land on the second, third, and fourth reels. This awards 8 free games, during which the scenery shifts to a moonlit night version of the valley. The feature is highly dynamic, as every additional Coin Scatter that appears during the round grants one extra free spin, allowing for extended play sessions.

Jackpot Bonus Explained

The centerpiece of the game is the Jackpot Bonus, which can be triggered in both the base game and during free spins. To enter, you must land Black Pots on the first and third reels simultaneously with a colored Jackpot Pot on the fifth reel. This triggers a respin-style game where players have three chances to reveal pots behind Lucky’s door. Every time a pot is found, it flies into a stack on the rainbow and resets the counter to three. If the stack reaches the top of the meter, you are awarded one of four progressive jackpots: Mini, Maxi, Major, or Grand. If the meter isn't reached, you still receive the cumulative sum of all collected pot multipliers.

Click the Play for Free button to load the Rainbow Stacks demo, test its features and payouts and decide if it is a game you enjoy.