Oxygen 3 SC.jpg
Oxygen 3

Oxygen 3 Free Play in Demo Mode

by ELK Studios |
78 players monthly
Play for real money
Oxygen 3 SC.jpg
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To play for free in demo mode, just load the game and press the ‘Spin’ button. You can learn more about slot machines and how they work in our online slots guide.

Oxygen 3 Review

Guru Score8.0/10

Quick verdict

Oxygen 3 is a high RTP (96%), medium-high volatility, underwater-themed game, created by ELK Studios. Read full review
Charles Perrin Game Analyst
219games reviewed

Game information

96%
25,000x
$0.2 / $100
Cluster pays
Slots
No
Yes
Yes
Yes
Yes
No
No
7-7-7-7-7-7
April 2026

Oxygen 3 Slot Review

Charles Perrin 17 Jun 2026

Theme and Storyline

The mysteries of the coral reef continue in the enticing underwater-themed slot Oxygen 3.

ELK Studios presents an engaging slot where sea creatures linger in the glowing relics of what appears to be a forgotten civilization, and you can take a deep dive for treasure.

Those players who liked the previous incarnations of this franchise will be drawn to Oxygen 3.

Oxygen 3 presents an ancient city washed up by time

Graphics, Sounds, and Animations

Oxygen 3 has a rather mellow track, underlined with bass effects, to keep players enthused.

You can use the settings area to turn down the sound, but we didn't find it too distracting!

As you might expect with ELK Studios, the graphics are sharp. The sea creatures are given plenty of prominence as they take center stage in the game.

Meanwhile, the ruins of a city left behind can be traced as a train runs on a track above the grid.

ELK Studios has given plenty of thought to the sound and animations, which remind us of the charming movie Finding Nemo, and they have done a good job.

Gameplay

Oxygen 3 uses a Cluster Pays mechanic

Oxygen 3 is set across 6 columns and 7 rows, featuring a Cluster Pays mechanic.

Players can win by connecting clusters of 5 or more matching symbols horizontally or vertically.

High-paying icons are denoted by the different colored fish, and collecting clusters of 32 or more can return a win worth 150x your wager.

Wilds, Bonuses, and Free Spins

Oxygen 3 comes with three different Wilds. There are regular ones, such as the Clam, which substitutes for all other regular-paying symbols, and it can trigger one of three features – Starfish, Squid, or Pearl.

There are also Exploding Wilds that remove symbols in a cone-shaped area up or down, and there are Blaster Wild symbols that convert symbols in a plus or X shape.

Meanwhile, players can build on multipliers by winning on them several times. The Multiplier Strike, which can trigger in any drop, places additional multipliers on the grid.

Players need to land at least 3 bonus symbols anywhere on the grid to trigger the bonus round. If one of the symbols in a sequence is a Super Bonus, an enhanced variant is awarded. During both modes, multipliers on Oxygen Bubbles remain persistent between spins, and an Oxygen Meter pops up.

The maximum win available in this game is 25,000x your wager.

Bet Sizes, RTP, and Variance

This game has a Return to Player (RTP) of 96%, hitting the desired industry target.

Bets are available from $/£/€0.20, while the maximum wager is $/£/€100.

This game has a medium-high volatility rating. However, our desired slot machine strategies lean into highly volatile games, where you can scoop larger sums, even if it doesn't happen frequently.

Conclusion

We think you should take a closer look at Oxygen 3.

Despite falling slightly short on the volatility front, the graphics and gameplay mechanics make this an engaging title.

Throw in an array of brilliant features, and ELK Studios appears to be on to a winner.

Oxygen 3 – General Discussion

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