Moon Sisters

Moon Sisters slot by ThreeOaks brings mystical Hold and Win action with portraits, blossoms, and glowing moons. The game blends elegant visuals with exciting mechanics, where landing 6 or more bonus symbols unlocks the special feature. During the bonus round, players can collect Mini, Major, or even the Grand Jackpot worth up to 1000× their total bet.

4.7

About Moon Sisters

Moon Sisters features elegant portrait symbols, floral and butterfly icons, and low card ranks A, K, Q, J. A Wild substitutes for all symbols except BONUS. The key mechanic is the Hold-and-Respin feature triggered by 6 or more BONUS moons. Only BONUS symbols appear during this mode, each carrying a fixed value added to the total when respins finish. Players start with 3 respins, and each new BONUS symbol resets the counter to 3. Mini and Major BONUS symbols can randomly appear, awarding jackpots of 30× and 150× Total Bet. Collecting all 15 BONUS symbols awards the Grand Jackpot of 1000× Total Bet.

Main Features of Moon Sisters

Wild substitution (replaces all symbols except BONUS)
Bonus Game: Hold-and-Respin with 6+ BONUS symbols
Fixed Jackpots: Mini 30×, Major 150×, Grand 1000× (all via Bonus Game)

Bonus Mechanics in Moon Sisters

1. Hold-and-Respin Bonus: Triggered by 6+ BONUS symbols. Start with 3 respins; only BONUS symbols appear; each new BONUS resets respins to 3; when spins end or 15 symbols fill the board, all shown values are summed and paid.
2. Jackpots: Mini (30× Total Bet) and Major (150× Total Bet) can randomly appear as labeled BONUS symbols during the Bonus; collect all 15 BONUS symbols to win Grand (1000× Total Bet).

Moon Sisters Demo

Try Moon Sisters in demo to feel its payout cadence and learn how wins scale from the paytable (top portrait pays to 10×, lows to 2× for five). Practice reading the Wild’s substitution and, most importantly, the BONUS Hold-and-Respin: 6+ moons trigger 3 respins, new moons reset the counter, and only BONUS symbols appear with fixed values that sum at the end. Testing for free helps you gauge how often 6+ moons show up and how the Mini (30×), Major (150×), or filling all 15 for Grand (1000×) can swing your results.

Moon Sisters Payout Table

The symbol set combines high-paying portraits with thematic icons and low card ranks. The most valuable is the red-fan portrait with payouts up to 10×, followed by the purple-flower portrait reaching 8×, the butterfly with up to 6×, and the blossom spray paying as much as 4×. The lower end of the table features the card ranks A, K, Q, and J, each offering wins up to 2×.

Red-fan portrait

5: 10×

4: 2×

3: 0.6×

Portrait

5: 8×

4: 1.6×

3: 0.2×

Butterfly

5: 6×

4: 1.2×

3: 0.2×

Blossom spray

5: 4×

4: 1×

3: 0.2×

5: 2×

4: 0.4×

3: 0.2×

5: 2×

4: 0.4×

3: 0.2×

5: 2×

4: 0.4×

3: 0.2×

5: 2×

4: 0.4×

3: 0.2×

Wild

The Wild symbol takes the place of every other icon on the reels,
with the only exception being the BONUS symbol.

Wild Mechanics

The Wild symbol shows two golden koi circling the moon.
It replaces all regular symbols to help complete wins.
The Bonus symbol is the only one it cannot substitute.
With its help, more winning combinations can appear during the base game.

Bonus Game

The Bonus feature begins with 6 or more Bonus moons.
Triggering symbols lock, and only new ones can land.
Players get 3 respins, each new moon resetting the counter.
Prizes from 1× to 25× total bet are added to the payout.

Mini Jackpot

When the Mini Bonus moon drops during the Bonus Game,
it instantly grants the Mini Jackpot worth 30× the total bet.
A quick reward that can boost payouts even before the round ends.

Major Jackpot

The Major Bonus moon can appear at random during the Bonus Game.
Landing it awards the Major Jackpot, fixed at 150× the total bet.
A bigger prize that adds weight to the feature wins.

How to Play Moon Sisters

Set your base bet; all payouts listed above are shown as multipliers relative to that base. For example, a five-of-a-kind of the top red-fan portrait pays 10× your base bet, while five card ranks pay 2×. The Wild symbol with twin koi substitutes for all non-BONUS symbols, helping complete or improve line wins; no Wild payout is specified. The core progression is hunting for BONUS moons. When 6 or more moons land, a Hold-and-Respin mode begins with 3 respins. Only BONUS symbols appear during this feature. Each time a new BONUS symbol lands, it locks and the respin counter resets to 3, extending the feature. Every BONUS symbol carries a fixed value drawn from this set: 1×, 2×, 3×, 4×, 5×, 6×, 7×, 8×, 10×, 14×, 16×, 18×, 20×, 25× Total Bet. At the end of the sequence—either when the counter reaches zero or all 15 positions are filled—the values on all locked BONUS symbols are added and paid as the Bonus Win. During the feature, special MINI and MAJOR BONUS symbols can randomly appear. If they do, they immediately award Mini (30× Total Bet) or Major (150× Total Bet). The ultimate target is to collect all 15 BONUS symbols; doing so pays the Grand Jackpot worth 1000× Total Bet. Because the feature pays via fixed-value additions and occasional jackpots, results can swing sharply between modest totals and dramatic spikes.

Chasing moons and a 1000× dream

Grabbed a no-deposit deal with 100 FS and pointed all of it at Moon Sisters. First impression: clean, glossy portraits and calm music, then that koi-ringed Wild starts popping and the whole thing feels silky rather than noisy.
Base game hits are simple: five of the red-fan portrait pays 10×, lows cap at 2×. Nice, but I was clearly waiting for the moons. When 6 finally landed together, my heart rate jumped—Hold-and-Respin kicked in with 3 tries and only moons on the grid. Each new orb locked and reset the counter, and the little numbers—1×, 2×, 5×, later a cheeky 14×—started stacking.
On my best run I finished with 11 moons totaling 62×. No MINI (30×) or MAJOR (150×) labels that time, and I didn’t fill all 15 for the 1000× Grand, but the laddering tension was real. The feature can run dry if you don’t see resets, yet when moons chain it feels like pure momentum.
Verdict: I’d play again with a bonus for that jackpot sweat. The math is straightforward, the visuals are easy on the eyes, and the bonus build-up—from 3 respins and back—is addicting in the best way.

Jason

Marketing Specialist

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