Oxygen 2 Online Slot

Oxygen 2 Online Slot Review

Explore a cartoon version of the deep as you play the Oxygen 2 online slot from ELK Studios. Aquatic animals with attitude and colorful floats appear on the 6x7 grid, paying prizes when at least 5 of the same kind land in any places at once.

Every win triggers an Avalanche as new symbol sreplace those in the combination and they repeat until no further win. Bubbles add multipliers to the vacant spots and these increase on any new wins in the same series. Values can hit a vast 2,048x from this feature, helped by jellyfish which randomly increase multipliers. Mines are wild symbols, blasting extra wilds across the game, while giant symbols can fill blocks on the grid for certain wins. The Oxygen 2 slot machine also has free spins, with persistent multipliers, and an upgraded free games feature sees multipliers boosted by jellyfish throughout.

This is a high volatility game, which makes the return to players of 94.00% something of a let-down. You can dive into the Oxygen 2 slot across desktop and mobile devices at any of the best New Jersey casinos and top Pennsylvania casinos for maximum wins of 25,000x the stake.

How to Play the Oxygen 2 Slot Game

Set on board a sunken submarine, the local wildlife makes use of their environment, with a cartoon crab holding a wrench, a tin can on the back of an angry-looking sea snail, and a valve handle on the back of a mean pink fish. There’s lots of humor to these characters who share their watery world with colorful fishing floats, the spiky sea mine, octopus, and jellyfish. 

An electronic soundtrack doesn’t quite match the theme, but it’s a lively tune and there are lots of fun audio effects as symbols drop down the grid. You can play on desktop devices, Android, iOS, or Windows mobiles with stakes from 0.20 to 100.00. Tap the stack of coins button adjacent to the reels to pick from the 12 wager options. Players can buy into bonus rounds and also have access to Auto and Turbo features. 

A tap on the 3 lines button opens the Oxygen 2 slot paytable. This has details on extras such as free spins and giant symbols, along with a breakdown of what you win if at least 5 matched symbols land anywhere on the 6 columns and 7 rows. Land the lowest value green float in 5 spots to win 0.1x the wager, increasing to 10x when 16 or more are in view at once. The red octopus pays from 1x to 100x.

Check our dedicated offers page for the best casino sign up bonus options available. 

Free Spins & Other Oxygen 2 Slot Machine Features

All symbols in a win vanish, triggering an ‘Avalanche’ of those above. New symbols appear from the top and you get further Avalanches for as long as they form winning combinations. Big symbols help, filling 2x2, 3x3, or 4x4 blocks, which count as 4, 9, or 16 symbols respectively. 

Wild mines can substitute for other symbols to create wins or improve their values. Blaster versions add more wilds in an X or + shape from their positions. Exploding wild mines remove symbols in a cone shape above, below, or to the left and right of themselves, while a Super version of this symbol activates any oxygen bubbles behind the removed symbols.

Oxygen bubbles are multiplier positions. Winning symbols leave a 2x multiplier behind and if there is another win in the same spot, over the same series of Avalanches, it doubles each time, to 4x, 8x, 16x and so on. The maximum possible value is a huge 2,048x with all multipliers applied to wins covering the same positions. 

If a win involves the octopus symbol this generous creature grabs additional multipliers and applies them to the payout. Jellyfish can also float into view, placing further multipliers in random spots at any time. All multipliers reset at the end of any Avalanche sequence. 

Treasure chest bonus symbols in 3 places award 10 free spins. They play out in the same way as the base games, but multipliers don’t reset once any series of Avalanches comes to an end. Instead, they remain active and increase further on any new wins in the same spots. 

Land 4 treasure chests and you trigger a Super version of the no deposit free spins. They work in the same way as the regular free games, but jellyfish will now appear on each spin. 

If 2 or 3 bonus symbols appear in any free game, you get 3 or 5 extra spins added on. Any 3 treasure chests add 7 extra spins to the total and upgrade the standard free spins to the Super version. 

Oxygen 2 Slot Maximum Wins, Volatility, & Average Returns

There’s a generous win limit of 25,000x the wager here, or 2,500,000.00 if you play at the maximum stake. What’s not so generous is the 94.00% return to players, which is standard across the entire ELK Studios range and a good 2.00% less that we expect from high volatility slots such as this.

Our Verdict on the Oxygen 2 Slot

Low returns aside, this is another excellent release from ELK Studios, which combines a fun style with some seriously rewarding features. The humorous deep-sea critters give the Oxygen 2 slot instant appeal, and there’s real depth to the gameplay, with Avalanches on every win, multipliers on winning positions, giant symbols, and exploding wilds. Free spins where the multipliers only ever go up, plus the Super free games with jellyfish swarming on every spin are where you have the best chance to grab the biggest prizes.

Dip your toes into the free version here at gambling.com then jump in for real prizes as you play the Oxygen 2 slot at our recommended slot sites.