Return to player
94%
Min bet size
0.20
Game type
Video Slots
Variance
Low
Reels
6
Progressive Jackpot
No
Popularity
Max bet size
100
Game provider
Elk Studios
Bonus Features
Yes
Paylines
Cluster Pays
Theme
Under the Sea
Oxygen 2 online slot game
Crisp graphics, cheerful music, and coral species - Oxygen 2 is a perfect blend of everything exciting you wish to see from a slot, packed together in one and sealed together with a nice bow of exciting bonuses on top. Travel with us to the deep ridge of Coral Creek, whose inhabitants bear machine-like attributes, continuously evolving and having their designs altered. Oxygen is indescribably valuable in these depths, as are the treasures you stand to win if you get these creatures to work for you. Oxygen 2 by ELK Studios is the provider’s latest venture into a world of thrilling gameplay, and we couldn’t be more excited to get our hands on it!
The Oxygen 2 Slot at a Glance: All the Important Facts to Know
- Oxygen 2 has a maximum win cap of 25,000x.
- Bonus rounds available.
- X-iter bonus buy is present.
- Blaster Wilds, Exploding Wilds, and Octopus Multipliers.
Graphics and Sound of the Oxygen 2 Slot Machine
At first glance, the audiovisual experience of Oxygen 2 doesn’t seem much of an upgrade from the original Oxygen, but that just speaks to the prequel’s quality standards. On closer inspection, we noticed that the visuals of the main grid had been upgraded to look much cleaner, introducing an added layer of vibrancy to the slot. Surrounded by pipes, sand, coral, and water on all sides, the grid stands proudly in the middle of the screen.
The audio isn’t typically reminiscent of what you’d expect from an ‘underwater’ slot, but we’re not complaining, because they’re pleasing to the ears nevertheless. The beats keep you on the edge of the seat, whereas the much-welcome sound effects make you feel more connected with the oceanic environment. Even Darwin would have been shocked at the way this marine life evolves.
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How to Play the Oxygen 2 Slot Machine
Much like the prequel, Oxygen 2 offers a 6x7 grid with individual positions that can stick to the reel and expand in size, offering exciting multipliers. The Cluster Pays mechanism doesn’t need you to form rows of the symbols. Instead, clusters pay out when five or more identical symbols appear adjacently on the reels.
One thing about Oxygen 2 - you won’t be able to find an off-theme element, even if you tried. The low-paying symbols are represented by floaty things in vibrant hues of pink, orange, and green. As for the higher-paying symbols, bettors can expect mechanical versions of threatening ocean creatures such as piranhas and crabs.
While five-of-a-kind clusters can pay 1x the bet at most, 16+ of a kind are a different story. You can expect to receive as much as 100x the bet, given you land the right symbols. Don’t let the bubbly nature of this slot fool you, because there are big wins to be scored.
| Symbol | 16+ | 13–15 | 10–12 | 8–9 | 6–7 | 5 |
|---|---|---|---|---|---|---|
 | 100x | 10x | 5x | 2.5x | 1.5x | 1x |
 | 50x | 5x | 3x | 1.5x | 0.75x | 0.5x |
 | 30x | 4x | 2.5x | 1.2x | 0.6x | 0.4x |
 | 25x | 3.5x | 2x | 1x | 0.4x | 0.3x |
 | 20x | 3x | 1.5x | 0.8x | 0.25x | 0.2x |
 | 15x | 2.5x | 1.25x | 0.6x | 0.2x | 0.15x |
 | 10x | 2x | 1x | 0.5x | 0.15x | 0.1x |
The slot also comes with wild symbols, substituting for every other pay symbol on the grid. Bettors can even score an all-wild win, paying out as much as a similar cluster of the highest-paying symbol would. When the symbol drop happens, the grid will occasionally get 2x2, 3x3, or 4x4 symbols. These can land anywhere and may come with additional multipliers to increase your winning amount.
Demo Version of the Oxygen 2 Slot
Oxygen 2 is a vibrant slot with thrilling multipliers and several exciting bonuses. To ensure that you enter the slot with the best strategies on your hand, ready to aim for that 25,000x win, you should check out the demo version. The free-play version lets you get a lay of the land (or water), allowing you to grasp how the slot works. This is where you’ll have the option of coming up with calculated strategies to boost your winning chances as much as you can. Use the PlayCasino website to try out the demo version before you invest in the real thing.
Bonus Features in the Oxygen 2 Slot
The thing about ELK Studios is that it won’t bombard you with ten plus bonus features, but that doesn’t mean the game performs any less when it comes to its bonus offerings. Every unique feature in this slot has been carefully curated to offer an incredible playing experience, all the while making sure your wins can be enhanced as much as the game permits. If you bet on Oxygen 2, here are all the bonus features you can expect to witness in all their glory:
Avalanche Feature: Once the winning symbols have paid out, they explode to make space for new symbols to fall down. The only exception is the special wild, which is activated but put on hold to explode later. The avalanche feature repeats until no new wins form after the symbol drop.
Oxygen Bubbles: Oxygen bubbles can be randomly activated to replace some exploding symbols. These bubbles start with a multiplier of 1x, doubling each time another symbol explodes on the same position. The bubbles can have a maximum multiplier of 2,048x. The slot also has a Multiplier Strike feature, which triggers on random wins and places a random number of multipliers on the reel.
The Jellyfish Multiplier: Occasionally, a jellyfish may arrive holding multipliers that it randomly places on the grid. Any multiplier that replaces an existing multiplier gets its value added to the previous one
The Octopus Multiplier: During spins, you’ll notice one random position enclosed in a golden box, with an octopus sitting behind it. If a win occurs on this specific position, the octopus is triggered, upon which it adds a random number of multipliers to the winning cluster, given that those multipliers are already available elsewhere on the grid.
Blaster Wilds: When part of a winning cluster, the Blaster Wild picks a random pay or wild symbol from the grid, replacing all pay symbols in an ‘X’ or ‘Plus’ pattern with that selected symbol, triggering a bigger win.
Exploding Wilds: When part of a winning cluster, Exploding Wilds result in the explosion of all pay symbols in two cone-shaped areas to the left, right, up, and down from the wild.
Free Spins: The scatter symbol is represented by a treasure chest, hitting at least three of which awards the bettors with 10 free spins. Hitting four scatters leads to the Super Bonus Game. Both of these games can be retriggered. The Bonus Game can also be upgraded to the Super Bonus game, if four scatters land during it.
X-iter: This is the Bonus Buy menu, offering bettors several options to purchase bonus features and guarantee certain triggers on the grid, increasing their payouts.
Winning Strategies for the Oxygen 2 Slot
Oxygen 2 doesn’t ask much of you - the bonus symbols do most of the work as you sit back. However, there are still ways you can use to reach the highest payouts. Here are the strategies we recommend for this slot:
- Choose the best online casinos: The slot comes with an RTP of 94%, which isn’t super high. This means you can benefit from receiving as many bonus offers as possible for this slot, which is possible only at the top online casinos.
- Manage your bankroll as well as you can: This is a high volatility slot, meaning you need to wait some time before you see the big wins rolling in. Spread your bankroll over several bets, and avoid betting all your money in the first few spins.
All the Technical Details
Oxygen 2 is a 6x7 slot with an RTP of 94% and high volatility. The minimum bet is 0.20, whereas the maximum is 100. Bettors can win a maximum amount of 25,000x in this slot. The cluster pays mechanism makes the slot quite simple, as wins pay out for combinations in every direction.
Best Alternatives to the Oxygen 2 Slot
Once you’re done hanging out with these creatures, there’s an endless list of watery adventures you can depart on. These two slots are some of our favorites with an underwater theme:
- Bigger Bass Splash: Who hasn’t heard of this iconic title by Pragmatic Play? Delivering an RTP of 96.5% on a high volatility with a maximum win of 5,000x, Bigger Bass Splash is one of the best ocean-based slots out there.
- Muddy Waters: Taking a different approach to this theme, Muddy Waters plunges you into polluted waters, showcasing that treasures can often be found among trash. From Peter & Sons, the slot has an RTP of 96.49% and a maximum win worth 20,000x.
Our Verdict
There’s no denying that Oxygen 2 is quite a happening slot where the thrill rarely ever slows down. The bonus features give you a lot to look forward to, while the wins are significant enough to keep you hooked. Our only complaint is that the slot doesn’t differ much from its predecessor, whether it’s the visuals or the bonus features. You could bet on either of these games, and it would feel almost the same. Regardless, the Oxygen series offers a fresh perspective on the underwater world, providing much to look forward to.
James is a casino games expert on the Playcasino.com editorial team. With many years of professional experience at a leading casino game development company and a passion for playing casino games, James has become a true expert in slots, blackjack, roulette, baccarat, and other games.
James uses this expertise to provide reliable, insider advice through his reviews and guides, breaking down the game rules and offering tips to help you win more often. Rely on James's extensive experience for expert advice on your casino play.
