Golden Rock Studios

Bonus Only

Casino-city dice trails replace conventional reel payouts

Only 0.1% of slots feature 3 Paylines.

SlotRanker Score
79
/ 99
79
05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

RTP
96.21%
return to player
Volatility
High volatility
variance
Max win
1,750×
top multiplier
Min bet
$0.09
per spin
Reels
5
3 lines
Player rating
4.9 ★
7 votes
DEMO Play free, no signup
Golden Rock Studios
Bonus Only
Embed on your site
4.9 / 5
7 ratings
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User ratings are shown separately from the Slot Score unless stated otherwise.

Why this score

High confidence (100%)

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Slot score profile across 5 weighted categoriesPayouts & RTP9/10RTP 96.21% → 9.0/10Volatility9/10high → 9.0/10Win Potential6.5/10x1750.00 (1750×) →…Features10/1019 features →…Game Mechanics8/10f=19 r=5 p=n/a →…
Payouts & RTP9/10
RTP 96.21% → 9.0/10
Volatility9/10
high → 9.0/10
Win Potential6.5/10
x1750.00 (1750×) → 6.5/10
Features10/10
19 features → 10.0/10
Game Mechanics8/10
f=19 r=5 p=n/a → 8.0/10
Context signals (tie-breakers)
Layout6/10
5x3 → 6.0/10
0.09–180 (×2000) → 8.0/10
provider avg 7.3 → 7.3/10
synthetic proxy → 5.0/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 79 — Bonus Only by Golden Rock Studios

https://slotranker.com/golden-rock-studios/bonus-only#score
How to cite

Slot Summary

Bonus hunters who prefer dice trails to ordinary symbol payouts have a clear match in Bonus Only from Golden Rock Studios. Every paying result takes place inside a casino-city bonus, making the reels an entrance to the main event. The distinction between Vegas, Macao, and Monte Carlo matters because their boards carry different prize levels.
MechanicsMatching bonus symbols open dice-board rounds

How It Plays

The reels check matching bonus symbols along the winning lines. Landing three matching symbols starts the corresponding board with two dice rolls, so the symbol match determines the destination.

A Golden Dice symbol on the final reel changes the entry award when it joins two matching bonus symbols. That combination gives four rolls for the corresponding bonus board.

Bonus & Free Spins

Dice rolls move the player around a board containing 40 spaces. Landing positions can award multipliers, extra rolls, movement forward or backward, or no prize at all.

Rolling doubles adds another roll. Completing a circuit increases the board payouts by its highest amount, giving another lap a different prize scale. The round ends when the available rolls run out.

Spec sheet
Bonus Only at a glance.
Identity
Slot nameBonus Only
Released5/17/2022
Math
SlotRanker Score79
RTP96.21%
VolatilityHigh volatility
Max win1,750×
Bet range$0.09 – $180.00
Player rating4.9 / 5 · 7 votes
Format
Reels5
Paylines3
Layout5x3

True Cost to Play

Expected average based on this slot's 96.21% RTP — individual sessions vary with volatility.

Cost per hour$1.36
Cost per session$1.36

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

Bankroll survival simulator

How long could a bankroll last on Bonus Only? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Volatility tier: High

Running simulation…
How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (High). The model is calibrated so the average return equals this slot's published RTP (96.21%), with wins capped at its top multiplier (1,750×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Bonus Only

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Casino availability depends on where you play from. We only show casinos that accept players from your country.

Compare Bonus Only with other games

Bonus Only
Bonus Only
Score 79This game
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Identity
Studio
Released5/17/20221/4/201711/13/202312/15/202311/20/2024
Math
RTP96.21%96.1%95.8%96.13%97.44%
VolatilityHigh volatilityMedium volatilityHigh volatility—Medium volatility
Max win1,750×—1,000×50,000×—
Format
Reels55555
Layout5x35x35x35x65x3
Paylines3303050243
Min bet0.090.30.30.10.1
Max bet1801530020400
Features
Progressive—————
Wild symbol✓✓✓✓✓
Free spins✓✓✓✓✓
Scatter symbol✓✓✓✓✓
Multiplier✓✓—✓✓
Bonus game✓✓———
Respins✓——✓—

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Questions & Answers

Bonus Only FAQ

3 questions

Bonus Only has a maximum win of 1750x the total bet, with payouts coming from its bonus rounds.

Yes. Each winning line can activate its own bonus when the required matching bonus symbols land on it.

Monte Carlo has the largest board payouts, while Vegas has the smallest. Macao is the remaining casino-city bonus.

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