Return to Player
96.16%
Minimum bet
0.10
Slot format
Classic slots
Variance level
Low
Number of reels
5
Progressive jackpot
No
Popularity
Maximum bet
6
Game Provider
Gamomat
Bonus features
Yes
Paylines
10
Theme
Classic
Stacks of Jacks online slot game
Stacks of Jacks takes a classic-slot approach, with familiar fruit symbols and low-variance gameplay. Its combinations can pay sizeable multiples of the spin bet. Players who want a straightforward video slot with a gamble option rather than elaborate features may enjoy its format.
Theme and Storyline
Stacks of Jacks keeps things simple. This classic slot game features fruit symbols that have been part of the online slots scene for many years. The familiar joker or jester is also included, a character often seen across the gambling industry.
Graphics, sound and animations
Stacks of Jacks has a restrained visual style, without elaborate graphics or animation. The review suggests that its relatively light presentation should work on almost any mobile device, regardless of hardware specifications. Although technically a 3D slot, its visuals have a simple 2D look. A border inspired by the 60s frames the reels and adds to the traditional feel, while multicoloured boxes on either side mark the paylines. Electronic sound effects recreate the familiar feel of a classic slot, even for people who do not usually play online slots.
Top Casinos for Playing Stacks of Jacks:
How the gameplay works
Stacks of Jacks has 5 reels, 3 symbol rows and 10 fixed paylines. Every symbol, including the wild, may appear on its own or in stacks 2, 3, 4 or 5 symbols high.
The main feature is a stacked wild that can appear on every reel. Shown as a joker, it serves as the slot’s wildcard and substitutes for any of the 10 regular symbols. Landing 5, 4 or 3 wilds on a payline awards 200x, 50x or 5x the spin bet, respectively.
The regular symbols come from the classic slots tradition. In descending value, they are 7s, bells, bars, melons, grapes, plums, oranges, lemons and cherries. The review lists 30 possible combinations and says just 5 return less than the spin bet.
Matching 7s or bars awards 50x, 10x or 2.5x times the spin bet for 5, 4 or 3 matching symbols. Bells and bars pay 25x, 7.5x or 2x times the spin bet. A payline with 5, 4 or 3 melons or grapes returns 20x, 5x or 1.5x times the bet. Plums, oranges, lemons and cherries pay 10x, 2.5x or 0.5x times the bet when 5, 4 or 3 matching symbols land on a payline.
Available controls include spinning with the spacebar, turbo spin and automatic entry into free games. Find these settings under the ‘cog’ button. The ‘$’ symbol opens the paytable, and you can also set the reels to spin at max bet and adjust auto spins.
Bonuses and free spins
Gamble Feature: After each win, you can try to double the payout by guessing whether the next card will be red or black. A correct guess doubles the bet, after which you can collect or gamble again. Before choosing, you can put only half the win at risk with the double option, which the review says is the choice most slot players make. It also claims the bet has no house edge and offers fair 50/50 odds; these are claims in the review, not an independent guarantee.
Bet sizes, RTP and variance
Use the /- control on the slot panel to set your ‘bet per line’. The stated range is 0.01-0.60. Multiply the displayed amount by the 10 fixed paylines for a total spin bet of 0.10 to 6.00. Selecting ‘max bet’ sets the wager at 6.00 per spin. The review classifies this as a low-variance slot and says wins should arrive frequently, despite the lack of features. It also claims that 26 of the 30 combinations return more than the spin stake. The stated RTP is 96.16%; RTP is a theoretical long-term measure, not a guarantee for an individual session.
Conclusion
Gamomat builds on familiar slot mechanics with an entertaining format of 5 reels and 10 paylines. Stacks of Jacks may suit fans of classic video slots who prefer uncomplicated gameplay. A gamble feature, reportedly not listed in the paytable, becomes available after a win and lets players try to double their winnings. The standard symbols and wild joker are stacked, so a symbol can cover the reels, form 5-symbol combinations across all 10 paylines and potentially reach the 2,000x maximum payout. That figure is a stated game claim in the review, not a promise of profit.
Evan Carrington brings more than 12 years of experience in the iGaming industry, with a focus on reviewing online casinos, assessing slot games and examining player safety. Their work covers casino licensing, RTP, volatility, bonus terms and withdrawal policies. Drawing on practical testing and independent research, Evan provides clear, evidence-based reviews to help players understand gambling platforms, their features and possible risks.
