Oxygen

Free Spins Multipliers RTP: 94.00%

Game Description:

The ridge of Coral Creek has been untouched for a millenia, evolving its environment and inhabitants to enhanced hybrids with volatile features that could erupt by a single touch.

Oxygen is a 6×7 bubbly slot that comes with multipliers, symbol transformations, wilds, a bonus game as well as a super bonus game – all packed into a potential of 25,000x bet

Game Rules:

Oxygen Slot

The Oxygen slot from ELK Studios has remained one of their more popular releases ever since it was released back in December 2012, brandishing a unique natural theme filled with deep-sea creatures. Unlike many UK online slots today, paylines are absent from this title, with the developers instead opting for a contemporary cluster pays engine to add a new twist to gameplay. This comes with some additional cascading mechanics, expanding symbols features, and multiplier bonuses, too, helping craft a dynamic and multilayered experience for this Oxygen slot.

Oxygen Game Background

The size of the playgrid in the Oxygen slot almost rivals the setups seen in Megaways slots, with 6 reels and 7 rows of symbols sitting in the centre of the screen. As we have already mentioned, there are no paylines in this game, but if 5 or more matching icons land adjacent, this could potentially form a combination due to the cluster pays engine.

A deep-sea trench has been chosen for the setting of this Oxygen slot, with multiple pieces of vibrant coral spouting up from the seabed. The water that fills a majority of the playscreen is a dark blue colour; however, something luminous glows from beneath, adding a touch of mystery to the aesthetic. Even with games like Big Bass Splash and Beware the Deep Megaways taking their themes beneath the waves, the darker style of this Oxygen slot stands out.

Oxygen Slot Symbols

In total, there are 7 base game symbols that make up the paytable in the Oxygen slot, with the lower-valued three being a collection of gemstones that have been caught by a fisherman's net. The rest of the higher-valued icons are a series of creatures that likely live deep within the ocean, each of which is a bright colour to contrast the dark water backdrop they may appear in front of.

Lower Value Symbols:

Pink Gemstone

Orange Gemstone

Green Gemstone

Medium Value Symbols:

Green Fish

Orange Seahorse

Higher Value Symbols:

Pink Angler Fish

Scuba Diver Octopus

There are also three forms of wilds in the Oxygen slot, those being the blue sea mine, orange sea mine, and colourful beach ball. The bonus symbols don't stop there, either, as there is also a treasure chest scatter and some oxygen bubbles that can be left behind on the reels following cascades that display multipliers.

Oxygen Bonus Features

ELK Studios frequently include cascading mechanics in their releases, with the Oxygen slot being no exception. Just like titles such as Tropicool 4, if a cluster of 5+ matching symbols randomly appears, these are then removed from the playtable, allowing new ones to fall into the empty gaps left behind from above. However, the defining aspect of this title is the oxygen bubbles that cascade can leave behind. These initially come with 2x multipliers, but should that same playgrid segment be involved in another cluster in the same spin, the multiplier might double each time.

As we have already mentioned, there are three forms of wilds in the Oxygen slot, all of which possess substituting abilities, meaning they could take the place of other base game symbols or deep sea creatures if they appear. The beachball is standard; however, the red and blue sea mines have some more nuanced abilities, with these being as follows:

The red sea mine wild explodes and removes symbols in an X shape from its position.

The blue sea mine selects a random base game symbol, causing that to explode and add wilds in an X shape.

On any random spin of the reels, there is the chance for mega symbols to appear in the Oxygen slot. These can land from 2x2 in size, up to 4x4, taking up to 16 segments on the playgrid at once.

The final bonus in the Oxygen slot is its free spins round, something that could be triggered if 3 or more treasure chest scatters are landed at the same time. In this bonus round, any oxygen bubbles left behind from cascades remain persistent during the free spins and do not reset.

Oxygen Mobile Play

The UK casino games that ELK Studios produces are usually compatible with multiple device types, with the same being applicable to this Oxygen slot. As long as a tablet, smartphone, or computer is connected to the internet, this keeps the quality of this title consistent, without there being any necessary downgrades.

Play Oxygen at BOYLE Sports

All in all, the Oxygen slot manages to take a familiar deep-sea setting but adds in a couple of unique twists, from the nautical creature symbols to the cascading bonuses and multiplier pockets left behind.

The Oxygen slot is actually the founding entrant in its series, with this now having a number of sequels in the form of Oxygen 2 and Oxygen 3.