All For One Studios

Kings of Crystals II Power Combo

Slots Video Slots Fantasy Action & Adventure Magic Gems Crown Royal Treasure Medieval Guns King

Royal fantasy sequel centered on combinable crystal powers

SlotRanker Score

/ 99

05099

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

How this score is built

RTP

94.2%

return to player

Volatility

Medium volatility

variance

Max win

12,500×

top multiplier

Min bet

$0.20

per spin

Reels

40 lines

Player rating

4.4 ★

13 votes

DEMO Play free, no signup

All For One Studios

Embed on your site

4.4 / 5

13 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

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

Payouts & RTP6/10

RTP 94.2% → 6.0/10

Volatility8/10

medium → 8.0/10

Win Potential8.2/10

x12500.00 (12500×) → 8.2/10

Features10/10

14 features → 10.0/10

Game Mechanics6.7/10

f=14 r=5 p=40 → 6.7/10

Context signals (tie-breakers)

Layout5/10

5x4 → 5.0/10

Bet Flexibility4/10

0.2–5 (×25) → 4.0/10

Provider Reputation7.1/10

provider avg 7.1 → 7.1/10

Popularity2.5/10

synthetic proxy → 2.5/10

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: 65 — Kings of Crystals II Power Combo by All For One Studios

https://slotranker.com/all-for-one-studios/kings-of-crystals-ii-power-combo#score

How to cite

Slot Summary

Kings of Crystals II Power Combo fills a narrow slot-design gap: it revisits a royal fantasy game while letting three separate Free Spins powers combine instead of forcing one fixed bonus route. All For One Studios ties crystal collection to Wild Power, Multiplier Power, and Jackpot Power, with the reel set expanding during Free Spins. That combination system, rather than the medieval setting alone, gives the sequel its reason to exist.

How It Plays

The base game begins on a 5x4 reel set with 40 lines, while crystal collection can start a separate event with one, two, or three Power Combo features active.

Free Spins changes the reel set to six rows and 60 lines. The wider format matters because selected powers can alter wild coverage, multipliers, and jackpot values together.

Theme & Atmosphere

Three kings and their crystals give the Royal, Crown, and Medieval themes a clear hierarchy, with each ruler associated with a different game-changing power.

Magic and Gems connect the royal setting to the mechanics, while Treasure supplies a practical goal for the separate Wild, Multiplier, and Jackpot powers.

Fantasy Action & Adventure Magic Gems Crown Royal Treasure Medieval Guns King

Features & Win Potential

Wild Power can add more wild reels, Multiplier Power can raise line-win multipliers, and Jackpot Power can increase the available Fixed Jackpots during the feature.

Power Combo is the differentiator because those effects are not mutually exclusive. Two or three powers may operate together when the relevant crystal conditions are met.

Free Spins Multiplier Scatter Symbol Wild Symbol Respins Medium volatility 5 Reels Symbols collection (Energy)Additional Free Spins Expanding Symbols RTP range Free Spins Multiplier Fixed Jackpots Reelset Changing

Bonus & Free Spins

During Free Spins, the game expands from 40 to 60 lines and applies the powers earned through crystal collection, making the altered reel set part of the bonus rather than decoration.

The active powers can operate alone or in combination, so the round may emphasize Expanding Symbols, a Free Spins Multiplier, Fixed Jackpots, or several of them together.

Spec sheet

Kings of Crystals II Power Combo at a glance.

Identity

Slot nameKings of Crystals II Power Combo

StudioAll For One Studios

Released10/5/2024

Math

SlotRanker Score65

RTP94.2%

VolatilityMedium volatility

Max win12,500×

Bet range$0.20 – $5.00

Player rating4.4 / 5 · 13 votes

Format

Reels5

Paylines40

Layout5x4

Expected average based on this slot's 94.2% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$4.64

Cost per session$4.64

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

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

Bankroll ($)Bet per spin ($)Speed

Volatility tier: Medium

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 (Medium). The model is calibrated so the average return equals this slot's published RTP (94.20%), with wins capped at its top multiplier (12,500×).

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 Kings of Crystals II Power Combo

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Compare Kings of Crystals II Power Combo with other games

	Kings of Crystals II Power Combo Score 65This game	Ultra Cluster Kingdom Score 92	Dragon's Hoard Score 42	Heroes Hunt 2 Megaways Score 85	Age of Conquest Diamonds & Dragons Score 71
Identity
Studio	All For One Studios	GameArt	KA Gaming	Fantasma Games	Neon Valley Studios
Released	10/5/2024	9/24/2024	9/4/2024	9/28/2021	1/30/2025
Math
RTP	94.2%	—	—	96.49%	96%
Volatility	Medium volatility	High volatility	—	High volatility	High volatility
Max win	12,500×	—	—	20,000×	1,200×
Format
Reels	5	8	5	6	5
Layout	5x4	8x8	5x3	6x6	5x3
Paylines	40	Cluster Pays	50	46656	20
Min bet	0.2	0.2	0.5	0.2	0.2
Max bet	5	200	250	50	200
Features
Progressive	—	—	—	—	—
Wild symbol	✓	—	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	—	—	✓	✓
Bonus game	—	✓	—	—	✓
Respins	✓	—	—	✓	—

Every number is shown as a delta against Kings of Crystals II Power Combo.

Comparing against

Kings of Crystals II Power Combo

All For One Studios

RTP

94.2%

Max win

12,500×

Score

Ultra Cluster Kingdom

+ Bonus Game− Wild− Multiplier− Respins

− Multiplier− Respins

Heroes Hunt 2 Megaways

Age of Conquest Diamonds & Dragons

+ Bonus Game− Respins

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