If you're trying to work out whether Oxygen is worth your time, this hands-on review breaks it down. Elk Studios are the team behind it, tuning the release for high variance, with a published RTP of 94%. Wins land at roughly a 29.38% hit rate, shaping how the sessions feel. Visually it's built with crisp artwork and atmosphere, with the action running on 7 reels and a familiar payline structure. Top wins are capped at 25,000x your stake, a genuinely massive ceiling for the patient. So does it deliver? Let's get into it.
Written by Daniel Chen · Last updated: January 2026
This title, Oxygen, is the work of Elk Studios. Presentation-wise it's wrapped in polished, characterful visuals, and it leans toward high volatility at a return-to-player rate of 94%. Under the hood you'll find a straightforward 7 reels layout.
Where Oxygen earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. With high variance, this one is aimed at players who can ride out the swings for the top wins. All told, it's a serviceable entry in the Elk Studios catalogue.
The RTP of 94% is below the industry average of ~96%. This is common for older slots or those with special features. The lower RTP may be offset by unique mechanics or higher maximum win potential.
High volatility means longer gaps between wins, but when wins do land, they can be significantly larger. A bigger bankroll and patience are recommended for this type of slot.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Oxygen features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
2.5 / 5 — Average
Oxygen by Elk Studios provides a straightforward slot experience. While it may not break new ground, it offers high volatility gameplay that will appeal to certain player preferences.