Oxygen 3 Game Demo: Review

As the name suggests, Oxygen 3 continues an established series and maintains its underwater identity, while shifting the focus even more towards linked mechanics. The setting is a colorful marine world, almost cartoonish, where tropical fish, corals, pearls and special creatures become the driving force of a fairly rich technical system.

We're not looking at a traditional payline slot, but rather a structure with cluster wins on a 6x7 grid. Winning combinations start from 5 identical symbols connected vertically or horizontally, while during the round cascades, large symbols, special Wilds, Clam-activated features, Bonus and Super Bonus modes come into play, plus a feature buy system called X-iter.

Theme and Graphics of Oxygen 3

Oxygen 3 chooses a very pleasant marine setting. The board is set in an underwater scene with ruins, columns, vegetation and intense blue shades, while the symbols have a luminous rendering that makes them stand out immediately. The overall effect is lively but not chaotic. Even when the board fills with special elements, the visual impact remains fairly clear.

The high-value symbols are marine creatures with very distinct personalities, including octopuses, fish, and other subjects that occupy center stage with saturated colors and sharp contours. The low-value symbols are represented by corals in three different shades and perform their visual role well, remaining consistent with the seabed without blending too much with it. It's a simple but effective distinction.

From a stylistic point of view, the game doesn't aim for realism. It prefers a bright, almost illustrated tone that well accompanies the technical nature of the title. This is why Oxygen 3 manages to remain intuitive even when introducing less common features, like the Sticky Pearl, the Moving Sepia, or the Directional Starfish.

Symbols and Payouts

The game features 7 paying symbols, divided into 4 high-value and 3 low-value symbols. Besides these, there are standard Wilds, special Wilds, Clam, Bonus symbols and Super Bonus symbols, which primarily serve mechanical functions.

The symbols and their associated prizes are:

• Red Octopus - pays up to 250x
• Purple Fish - pays up to 150x
• Green Fish - pays up to 100x
• Blue Fish - pays up to 60x
• Pink Coral - pays up to 40x
• Green Coral - pays up to 30x
• Blue Coral - pays up to 20x

The cluster structure means that value increases based on group size. The lowest payments start from just 5 connected symbols, while maximum values are reached with clusters of 32 or more symbols. The standard Wild substitutes for paying symbols and, if a winning combination consists only of Wilds, the prize follows the value of the highest symbol.

Bonus Features of Oxygen 3

The game includes the activation of bonuses and special mechanics that concretely affect the construction of wins during the round.

• Avalanche - each winning cluster is removed from the board, symbols above fall downward, and new symbols drop to fill empty spaces. The cycle continues until new useful combinations form.
• Oxygen bubbles and multipliers - when a winning symbol is removed for the first time, an Oxygen Bubble appears in its position. If another winning symbol is later eliminated above that position, the multiplier doubles. In Bonus mode, these bubbles remain on the board between cascades.
• Multiplier hit - a cluster of Oxygen Bubbles with already active multipliers can randomly appear before symbols fall. This boost can occur in both the base game and bonus cascades.
• Wild Clam and dedicated functions - the Clam substitutes for paying symbols and, when participating in a win, can activate one of three special functions. The Pearl makes a chosen paying symbol sticky, the Sepia leaves Wilds along its path, the Starfish hits a direction on the board and can increase the multiplier.
• Explosive Wild - this is a special Wild that, once activated, generates a cone explosion that removes paying symbols in multiple directions and forces a new board fill.
• Blaster Wild - another special Wild that converts symbols in an X or Plus zone from its position. If already converted symbols are hit a second time, they can transform into Wilds.
• Large symbols - during cascades, 2x2, 3x3, and 4x4 symbols can appear. For winning purposes, they count as the corresponding number of standard 1x1 symbols covered on the board.
• Bonus and Super Bonus - 3 Bonus symbols activate the Bonus game with 10 bonus cascades. If a Super Bonus symbol appears among the 3, you enter Super Bonus mode. Both versions feature an oxygen counter that fills with wins and, when completed, activates or enhances a multiplier cluster. Retriggers with +3 or +5 bonus cascades are also provided based on the combination obtained.
• X-iter - the feature buy system allows access to different modes. Bonus Game costs 100x the bet, Super Bonus 250x, Clam Soup 25x, Bonus Hunt 2.5x, and Mega Hunt 5x. All X-iter modes maintain a theoretical RTP of 96.0%.

Jackpot and Maximum Wins

Oxygen 3 doesn't include network jackpots or progressive jackpots. Its structure focuses on the fixed theoretical maximum win, declared up to 25,000x the bet. It's a high value, consistent with a medium-high volatility slot and a considerable number of features that can chain together in the same round.

Similar Slots to Oxygen 3

Those who appreciate Oxygen 3's rhythm might also look at other Elk Studios titles or games that work with clusters, cascades, and layered features:

• Oxygen
• Oxygen 2
• Pirots

Author's Notes

The feeling Oxygen 3 leaves is that of a slot designed to appeal to those who aren't satisfied with a linear structure. It's not just the number of features that makes the difference, but how they can fit together. The game can proceed quite calmly for several spins and then suddenly change face as soon as the grid begins to retain multipliers, Wilds, and feature symbols in the same space.

Despite being a rather technical title, Oxygen 3 isn't difficult to read. Elk Studios has managed to combine complexity with visual clarity. For those who love studying mechanics and truly understanding what happens on the board, it's a slot that offers more than one reason to stay. For those seeking a very immediate experience, it might seem a bit more demanding than average.