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Oxygen Game Attributes

Oxygen Slot Review

Oxygen is a video slot developed by ELK Studios, released in December 2023. This slot features a transparent 6x7 grid set against an underwater shipwreck backdrop, creating a water world theme with colorful exotic fish symbols and an ambient soundtrack. The game offers a maximum win potential of 25,000 times the stake, with a return to player (RTP) of 94% and medium to high volatility. Players can place bets ranging from €0.2 to €100 per spin, making it accessible to a variety of betting preferences.

Gameplay and Layout

Oxygen uses a cluster pays system on a 6x7 grid, where wins are formed by clusters of 5 or more matching symbols anywhere on the grid. Unlike traditional paylines, this cluster mechanic allows for more flexible winning combinations. The game does not use paylines or both-way wins, focusing instead on grouping symbols to trigger payouts.

After each winning cluster, an Avalanche mechanic removes the winning symbols, allowing new symbols to cascade down and potentially create consecutive wins within the same spin. This feature supports continuous gameplay and increases the chances of multiple wins from a single spin.

Symbols and Payouts

The symbols in Oxygen are themed around deep-sea creatures and underwater elements. The highest-paying symbol is the Octopus in a diving helmet, which pays between 1x and 100x the bet for clusters of 5 to 14 or more. Other symbols include various colorful fish and stones, with payouts ranging from 0.1x to 50x the bet depending on the symbol and cluster size.

The pink fish pays up to 50x the bet, the orange fish up to 30x, and the green fish up to 25x. Stone symbols offer lower payouts, with the pink stone paying up to 20x, orange stone up to 15x, and green stone up to 10x for large clusters. Regular wild symbols substitute for any pay symbol to complete or improve winning clusters.

Special Features and Mechanics

Oxygen incorporates several advanced mechanics and features that enhance gameplay:
Avalanche Mechanic: Winning clusters are removed, and new symbols fall into place, allowing for consecutive wins.
Expanding Mega Symbols: Large symbols up to 4x4 in size can appear randomly, increasing the chances of forming bigger clusters.
Wild Symbols: Wilds substitute for pay symbols and come with two special modifiers: *Exploding Wild:* After a win, this wild explodes at the end of the avalanche, removing symbols in an X-shaped area around it. *X-Blaster Wild:* This wild replaces symbols in an X-shaped area with a randomly selected pay symbol or wild, potentially creating more winning clusters. Multiple X-Blaster Wilds can convert symbols into wilds repeatedly.
Cluster Pays: Wins are based on clusters of matching symbols rather than paylines.
Position Multipliers: Each winning position gains an oxygen bubble multiplier starting at x1. These multipliers double with each consecutive win on the same position, up to a maximum of x2,048. Multipliers reset between base game spins but persist and continue to grow during bonus rounds.

Bonus Features

The bonus round in Oxygen is triggered by landing 3 or more scatter symbols anywhere on the grid. Players start with 10 free spins, during which position multipliers carry over and continue to increase without resetting. Additional free spins can be won by landing 2 or 3 scatters during the free spins, awarding +3 or +5 extra spins respectively.

A special Super Free Spins mode activates when 3 scatters appear during the free spins, featuring persistent multiplier positions and at least one persistent multiplier feature active on every spin. This mode enhances the potential for large wins through continuous multiplier growth.

Random multiplier features can also trigger during gameplay:
Multiplier Strike: Adds a random number of multipliers to the grid during avalanches or the initial spin.
The Collector: Absorbs all visible multipliers to its own position; it triggers only when part of a winning cluster and can be persistent.
The Dealer: Multiplies all multipliers in adjacent vertical or horizontal V-shaped areas by at least x2; this feature also triggers only when part of a win and can be persistent.

Bonus Buy Feature

Oxygen offers a Bonus Buy feature called X-iter, available in some jurisdictions. This feature allows players to purchase various bonus rounds directly with different multipliers on the stake: Bonus Hunt: 3x stake to increase the chance of triggering the bonus round by three times. Multiplier Strike: 10x stake for a guaranteed multiplier strike feature. Persistent Multiplier: 25x stake for a guaranteed persistent multiplier feature. Bonus Round: 100x stake for the regular free spins feature. Super Bonus Round: 500x stake for the super free spins feature.

This option provides flexibility for players who want to access bonus features without waiting for scatter triggers.

Betting Range and RTP

The betting range in Oxygen spans from €0.2 to €100 per spin, accommodating both casual players and high rollers. The RTP is set at 94%, which is slightly below the industry average but balanced by the medium to high volatility rating. The hit frequency is estimated at 36%, indicating a moderate chance of landing winning clusters during gameplay.

Theme and Visuals

Oxygen’s theme revolves around a water world, featuring an underwater shipwreck environment. The transparent 6x7 grid allows players to see the detailed background, enhancing the aquatic atmosphere. Symbols include various colorful fish and stones, while the soundtrack complements the underwater setting with ambient sounds. The overall design is clean and visually appealing, contributing to a cohesive gaming experience.

Mobile Compatibility and Demo Mode

Oxygen is fully optimized for play on Android and iOS devices, as well as modern web browsers, without requiring any app downloads. This ensures accessibility for players on the go.

For those interested in exploring the game without risking real money, Oxygen is available in a free demo mode on our website freedemo.games. This mode allows players to try the game’s mechanics, features, and bonus rounds without any financial commitment. Additionally, the game can be downloaded for free or integrated into other websites using widgets, plugins, or APIs, providing flexibility for operators and players alike.

Conclusion

Oxygen by ELK Studios offers a cluster pays slot experience with a distinctive underwater theme and a transparent 6x7 grid layout. The game combines various mechanics such as avalanches, expanding mega symbols, and position multipliers to create dynamic gameplay. Its medium to high volatility and maximum win of 25,000x the stake appeal to players who enjoy a balance of risk and reward. The inclusion of multiple bonus features, free spins with persistent multipliers, and a bonus buy option adds depth to the gameplay. With mobile compatibility and a demo mode available, Oxygen is accessible for a wide range of players interested in exploring a water world-themed slot.