Oxygen Put Through Its Paces — Elk Studios
First impressions verdict: Oxygen knows what it is trying to do. Designed on underwater, the package holds tight from spin one. Zero press-kit reviewing here — each claim that follows came from actual spins.
The Pay Table
Between 0.20 to 100 per spin, Oxygen spans the full betting range. With 7 lines to work with, dry stretches remain tolerable. As always: variance rules single sessions — play inside your bankroll.
Art, Symbols and Sound
The reel cast covers yellow, pink, orange and green fish. Substitution work falls to the wild. The bonus chest and multiplier bubbles scatter remains the icon worth chasing here. With both on the reels, Oxygen holds each spin alive with potential.
Special Mechanics
Feature play starts with the Free Drops — watch for three bonus symbols to set it off. Beyond the first round, three bonus symbols and a persistent multiplier feature unlocks the Super Bonus. An Avalanche rounds out the feature list too — watch for any winning combination. Still — the Big Symbols brings yet another way to win, through random chance with any spin. The fifth feature — the Cluster Wins — extends the feature set, arriving via five or more symbols connected horizontally or vertically adjacent. Bonus frequency ran fair across our review sessions — neither starved nor flooded.
Top Casinos to Spin
Ready for a place to spin? 21LuckyBet and HunnyPlay host Elk Studios titles including Oxygen. Enjoyed Oxygen? Similar titles include Book of Sam plus Coba, both from the same style.
Our Takeaway
8 out of 10: solid, playable, honestly built. Elk Studios ships 140+ games on the shelf — and Oxygen is one of the ones worth revisiting. Mike Hunt|Mark Lacey ran Oxygen through full testing for Nodepositcasinoguide; details current on July 22, 2026.
Pros
- Bonus rounds included: Playing this game you can experience the Free Drops bonus that is launched by three bonus symbols.
- Scatter symbols for game wins: The slot machine allows you to win by hitting the bonus chest and multiplier bubbles icon, having them land anywhere on the slot triggers a win.
- Based on the underwater theme: Immerse yourself with the underwater feel with the yellow, pink, orange and green fish and the red, orange and green crystals icons.
Cons
- This one does not support progressive jackpots: Progressive jackpots allow for massive payouts and who doesn't love that? This one lacks progressive jackpots.
- No free mode: There is no free-play version, meaning first-time players start with real stakes.
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Frequently Asked Questions
What type of game art can you see in Oxygen?+
Oxygen consists of yellow, pink, orange and green fish to deliver on the underwater feeling, also you will find red, orange and green crystals icons.
Does Oxygen slot offer wild symbols?+
This underwater themed game has wild symbol for the wild symbols.
Does Oxygen include bonuses?+
Yes, the slot has a frew such as Free Drops launched by three bonus symbols and the Super Bonus
are there scatters in the slot machine?+
Yes, the bonus chest and multiplier bubbles symbol allows for winning the game.
How much can you stake per spin?+
Stakes range from 0.20 to 100 per spin, fitting penny players and bigger bankrolls alike.
Where can I play Oxygen?+
Oxygen appears in casinos carrying Elk Studios games, such as Katsubet and Slotozen Casino.
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