ELK Studios

Oxygen 3

Third Oxygen entry focused on persistent position multipliers

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

96%

return to player

Volatility

High volatility

variance

Max win

25,000×

top multiplier

Min bet

$0.20

per spin

Reels

Cluster Pays lines

Player rating

4.2 ★

11 votes

DEMO Play free, no signup

ELK Studios

Embed on your site

4.2 / 5

11 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 & RTP9/10

RTP 96% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential8.8/10

x25000.00 (25000×) → 8.8/10

Features10/10

15 features → 10.0/10

Game Mechanics8/10

f=15 r=5 p=n/a → 8.0/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility4/10

0.2–10 (×50) → 4.0/10

Provider Reputation7.1/10

provider avg 7.1 → 7.1/10

Popularity5/10

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 — Oxygen 3 by ELK Studios

https://slotranker.com/elk-studios/oxygen-3#score

How to cite

Slot Summary

Oxygen 3 occupies the gap between a Cluster Pays cascade and a position-memory Multiplier game. ELK Studios lets each winning position leave an Oxygen Bubble, then doubles that position's multiplier when a later hit returns there. As the third Oxygen title, it keeps the series' Avalanche core but adds Clam modifiers and specialized Wild behavior, giving its 25,000x ceiling a clear mechanical route rather than treating it as a detached headline.

How It Plays

Connected symbol clusters create wins, then Avalanche behavior removes them and drops fresh symbols into the cleared spaces. New clusters can continue the same sequence.

The important read is positional rather than payline-based. A returning hit can reuse an Oxygen Bubble, increasing that location's Multiplier before another cascade resolves.

Theme & Atmosphere

The Underworld setting depicts a drowned future where coral and sea life have reclaimed ruined human structures, giving the cluster field a submerged archaeological character.

Despite that premise, the treatment remains readable and animated rather than bleak, allowing large symbols, bubbles, and Wild effects to remain distinct during longer sequences.

Underworld

Features & Win Potential

Mega Symbols can occupy several positions at once, helping a Cluster Pays result reach more cells before Cascading symbols refill the cleared area.

Expanding Symbols, Random Multiplier behavior, and three Wild Symbol variants all feed the same positional objective: create another hit where an Oxygen Bubble already remains.

Free Spins Multiplier Scatter Symbol Wild Symbol Cascading Cluster Pays 5 Reels Bonus Game Expanding Symbols RTP range Avalanche Gonzo mechanic Random multiplier Mega Symbol (3x3)Sticky Symbols

Bonus & Free Spins

The Bonus Game starts when the required treasure chests land, then carries position Multipliers between drops instead of clearing their value after each result.

Its stronger form begins with more developed multiplier positions, making Sticky Symbols and repeated cluster hits more consequential than a fresh bonus grid with no stored values.

Spec sheet

Oxygen 3 at a glance.

Identity

Slot nameOxygen 3

StudioELK Studios

Released

Math

SlotRanker Score79

RTP96%

VolatilityHigh volatility

Max win25,000×

Bet range$0.20 – $10.00

Player rating4.2 / 5 · 11 votes

Format

Reels5

PaylinesCluster Pays

Layout5x3

Features

Themes

Expected average based on this slot's 96% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$3.20

Cost per session$3.20

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 Oxygen 3? 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: 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 (96.00%), with wins capped at its top multiplier (25,000×).

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 Oxygen 3

No matching casinos for your region yet

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

Compare Oxygen 3 with other games

	Oxygen 3 Score 79This game	Dead Rider's Trail Score 88	Boss Bear Score 85	Hades Lost Treasures Score 84	Tome Of Hades Score 83
Identity
Studio	ELK Studios	Relax Gaming	Push Gaming	Gold Coin Studios	Valkyrie
Released	—	8/24/2022	11/22/2023	4/8/2024	5/4/2026
Math
RTP	96%	96.2%	96.47%	96.23%	97.7%
Volatility	High volatility	High volatility	High volatility	High volatility	Medium volatility
Max win	25,000×	50,000×	25,000×	10,000×	33,333×
Format
Reels	5	6	6	5	5
Layout	5x3	6x6	6x5	5x5	5x5
Paylines	Cluster Pays	46656	5	3125	—
Min bet	0.2	0.2	0.1	0.2	0.1
Max bet	10	20	100	25	1000
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	—	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	✓	✓	✓	✓
Bonus game	✓	✓	✓	✓	—
Respins	—	—	—	—	—

Every number is shown as a delta against Oxygen 3.

Comparing against

Oxygen 3

ELK Studios

RTP

96%

Max win

25,000×

Score

Explore More Games with Similar RTP

	Provider	RTP	Volatility	Max win	Score
Trinity Reels	Betsoft	95.96%	High volatility	15,127×	82
Alien Fruits	BGaming	95.97%	High volatility	15,000×	80
Stitchers Get Stitches	StakeLogic	95.98%	High volatility	20,000×	77
Fever Spin Megaways	iSoftbet	95.99%	High volatility	50,000×	81
Oxygen 3	ELK Studios	96%	High volatility	25,000×	79
Diggers Gold Rush	Barbara Bang	96%	High volatility	20,000×	85
Candyways Bonanza 3	StakeLogic	96.01%	High volatility	20,000×	88
Zombie aPOPalypse MultiPop	AvatarUX	96.01%	High volatility	20,000×	87
Freaked Out Fish	Blue Guru Games	96.02%	High volatility	30,000×	88
Dr. Rock & The Riff Reactor	TrueLab Games	96.03%	High volatility	50,000×	88
Crystal Prince	Quickspin	96.04%	High volatility	11,630×	87

01What is the RTP of Oxygen 3?

Oxygen 3 has a listed RTP of 96%, high volatility, and a stated maximum win of 25,000x the stake.

02How do Oxygen Bubble multipliers work?

Winning symbols leave Oxygen Bubbles on their positions. If a later Avalanche win uses the same position, its Multiplier doubles for the continuing sequence.

03What do the Clam modifiers change?

The three Clam outcomes can lock symbols for a redrop, add Wild Symbols, or clear symbols while placing multipliers on affected positions.

Series