medium high
Min Stake
Max Stake

About Oxygen

At the bottom of the ocean, amid the lost wreckage, lies hidden treasure and exotic sea creatures. As the reels spin, there is the chance for bonuses to trigger, ranging from X-Blaster Wilds to Exploding Wilds.

ELK has designed the Oxygen slot with a 6x7 grid and a cluster pays mechanic for winning combinations to be created. Five or more matching symbols is enough to complete winning combinations.

Oxygen Slot Information

Slot Provider: ELK

Slot Theme: Sea

Bonuses: X-Blaster Wild and Exploding Wild

Free Spins: Yes

How to Play Oxygen


At the start of Oxygen, you will need to set your stake using the in-game controls. You can select a betting amount between the minimum and maximum betting range available.


Once you have set your stake amount, you can click the spin button to place the bet and set the reels spinning.

Oxygen Slot Bonus Features

There is a range of bonus features available in Oxygen, which range from Exploding Wilds and X-Blaster Wilds to a Free Drops round.

Bonus Round

The Oxygen free drops round can be triggered by landing a minimum of three bonus symbols, and during this round, the multiplier values will be persistent. There is also the potential to trigger a Super Bonus by landing three bonus symbols and one multiplier.

Wild Symbols

X-Blaster Wild - A random payout symbol or wild is selected, with all payout symbols being replaced in the shape of an X.

Exploding Wild - When detonated, removes all payout symbols within an X-Shape


Any symbols included as part of a winning combination are removed, whilst new symbols fall in place to fill the spaces. The avalanche feature can continue until no new winning combinations can be created.

Multiplier Bubbles

Each winning combination doubles the multiplier value on the symbol positions that are covered by the winning combination. The first win on any symbol position creates a X1 multiplier where the multiplier value is doubled for every new winning combination that covers.


The multiplier collector feature will collect all multiplier values that are visible to the collector symbol position. This can be activated when included in a winning cluster.

Dealer Feature

The dealer feature can be activated when part of a winning cluster. When active, this feature multiplies all multipliers within the area of adjacent V shapes.

21.co.uk Review of Oxygen

The online slot, Oxygen, integrates its own unique gameplay features to set it apart from other titles in the genre of sea and fishing slots. The bonus features include the main bonus round, as well as other modifiers, which can come in the form of exploding wilds and X-Blaster wilds.

Take Time to Think | BeGambleAware.org | 18+

We're sorry!

Unfortunately, 21 isn't available in your country.