Reef Run-slot-main

There are many underwater themed slots out there, floating around on the web. But Yggdrasil‘s take on this classic concept in Reef Run is perhaps a little edgier, a little more cartoon-like. We’re thinking you’ll probably like it.

Reef Run is your average video slot: it has 5 reels and 20 paylines, and comes with several special features. These include free spins, level multipliers, a ‘Golden Bet’ option, Reef Run mode with Mystery Wins. An attractive range of additions for any player looking for dynamic gameplay. This online slot also comes with an RTP of 96.4%, and a maximum win of 20,000 coins per line. It is also a high volatility slot, so expect those big wins to be pretty darn big!

Take a spin on the free play version of the slot and read up on the slot below. Once that’s done, play for real money and real wins at one of our recommended casinos!

Slots Features


With 5 Free Spin symbols on the reels, you can trigger 60 free spins!

During Free Spins, each symbol has a level multiplier that can go up to 20x after 3rd hit.

Even the lowest paying symbol in ‘Reef Run Mode’ pays out between 400-2500 coins.


Reef Run Mode can only be triggered when using Golden Bet, which costs 5 extra coins per spin.

$125 isn’t a particularly high bet limit for highroller players.

High volatility slots do not pay out frequent small wins. Players might have to wait a while before a win.

TypeVideo slot
Reels and Paylines5 reels, 20 paylines
Game FeaturesFree Spins, Level Multiplier, Golden Bet, Reef Run Mode and Mystery Wins
Range of Bet$0.20-$100 when Golden Bet deactivated; $0.25-$125 when Golden Bet activated
Coin Values0.01, 0.02, 0.03, 0.05, 0.07, 0.10, 0.20, 0.30, 0.50, 0.70, 1.00, 2.00, 3.00, 4.00, 5.00
Maximum Win20,000 coins per bet line
Software ProviderYggdrasil Gaming

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Reef Run-slot
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Theme & Background

Reef Run Slot - Green Fish

Reef Run is the same type of slot as other underwater favorites like Sea Hunter from Play’n GO and Golden Fish Tank, also a Yggdrasil slot. Clearly, people like their sea creatures and they like them to be volatile.

Yggdrasil’s interpretation of what it looks like ‘unda’ the sea’ is a little bit more on the creepy side than on the cute side. The puffer-fish, in particular, is one fish you wouldn’t want to meet when on a midnight swim. True to Yggdrasil standards, each sea character is uniquely and expertly crafted. The octopus, the crab, the snail – these symbols all look great, floating around in their boxes against the static water background.

We totally appreciate that this slot doesn’t have the usual ‘special’ higher paying symbols versus ‘a bit less special’ lower paying symbols contrast. It’s just good design and gameplay all round. This comes out even more when the Reef Run Mode is activated.

Anyway, Reef Run does a stellar job at immersing you underwater – and in the slot itself. The special features contribute to this thanks to their unique structure. Read down below for some more details on those.


Reef Run is the type of slot we like to review – because each of its special features has a little something something that truly does make it special. And, the features have been created in such a way to make them flow with the overall theme of the slot, contributing to the engaging game.

With Reef Run, players can access Free Spins, Level Multipliers, a high stakes Golden Bet mode, and a Reef Run mode. If you’re into risk and high wagers – then you definitely want to find out more about what makes these features tick.

To read up on each feature, just click/tap on the expanding sections below.

Explore Reef Run Symbols

Reef Run Slot - Free Spins Symbol

Free Spins

In order to trigger free spins, you need to land the Free Spins symbol anywhere on the reels. The ‘anywhere’ is a big plus, because the likelihood of activating free spins is higher.

When two or more Free Spins symbols hit the reels, they reward the player with a corresponding amount of Free Spins. Check out how it works:

  • 2 Free Spin Symbols = 2 Extra Free Spins in Free Spins Mode
  • 3 Free Spin Symbols = 10 Extra Free Spins
  • 4 Free Spin Symbols = 20 Extra Free Spins
  • 5 Free Spin Symbols = 60 Extra Free Spins

The 60 free spins is an impressive number – and definitely a rare number for slots.

Reef Run Slot - Free Spins Symbol

Level Multiplier

During the Free Spins round, each symbol has a Level Multiplier. This means each symbol has the potential to become multiplied, as long as the symbol is hit.

The symbol will increase in Level Multiplier when it ‘wins’, i.e. it’s hit in part of a winning combination. If the same symbol is hit again during the Free Spins round, the winnings will be multiplied again. 

  • After 1st hit = x5 Level Multiplier
  • After 2nd hit = x10 Level Multiplier
  • After 3rd hit = x20 Level Multiplier

The Level Multiplier remains unchanged after three hits, even if the symbol is hit even more. So the maximum multiplier possible is x20.

An awesome feature of this is that several symbols can be hit in a spin. All of these symbols will be leveled up, which can really deliver some massive wins if you’re lucky.

Reef Run slot - Red Crab

Golden Bet

The ‘Golden Bet’ is a game mode option which you can activate or deactivate at any time. As long as it’s in the base game. It’s activation button is a little checkered flag to the left of the ‘Spin’ button. Click on it, and voila`! Golden Bet is active.

In Golden Bet mode, each spin costs an extra 5 coins. In fact, the minimum and maximum bet levels are $0.25 – $125 in Golden Bet mode (as opposed to $0.20 – $100).

The point of Golden Bet is to be able to trigger the Reef Run mode. If you launch into the Free Spins round in Golden Bet mode, the Free Spins will be triggered in Reef Run Mode.

Retriggering Free Spins with Reef Run Mode active will extend the race.

Reef Run Mode + Mystery Wins

So, Reef Run Mode is a special mode of Free Spins. It can only be triggered using the Golden Bet.

Once Reef Run Mode is up and running – players will get to choose their ‘creature’. Basically, this is the sea creature you think will win the race.

If the player’s pick wins the race – the player will win a Mystery Prize in addition to the normal Free Spin wins. If two or more creatures finish up the Free Spins round with the same score, both will be considered as the winners.

The Mystery Prizes are as follows:

  • Snail: 400 – 2,500 coins
  • Seahorse: 500 – 5,000 coins
  • Mantis: 600 – 7,500 coins
  • Octopus: 800 – 10,000 coins
  • Crab: 1,000 – 15,000 coins
  • Blowfish: 1,500 – 25,000 coins

From the list above – you can see for yourself that picking the winning creature would really pay off.

Payouts and Wagering Limits

Reef Run Slot - Paytable

As you can see from the above paytable, Reef Run has quite a solid payout ratio for each of its symbols. Of course – there is a huge difference between the top symbol and the lowest symbol, but hey, still a pretty good deal.

Since the slot operates in both normal mode and in Golden Bet mode, it has different wagering limits. In normal mode, players can bet between $0.20 – $100. In Golden Bet mode, players can bet between $0.25 – $125. Of course, this is due to the extra 5 coins used per spin.

Reef Run has an RTP of 96.4% and a hit frequency of 42.4%. Although the payout rate is relatively average, it’s the hit frequency that proves truly impressive. It’s not everyday you come across an online slot with a HF this high. This, coupled with its high volatility makes for one exciting product.

Aside from this, Reef Run also has a maximum win of 20,000 coins per bet line. Given the ‘per bet line’ bit, that’s one heck of a payout. All in all, we’d say that this Yggdrasil slot is a stellar choice for highrollers and even casual players alike. Just keep an eye on your bankroll, as always.

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Final Verdict

Reef Run


Reef Run is one of Yggdrasil’s earlier products, not that you can tell that from its quality. It’s a testimony to the fact that Yggdrasil has always delivered on what players want. And what players want is engaging gameplay, unique special features, high stakes and high payouts to boot. Reef Run seems to practically tick all those boxes – and then some.


If you want to give this slot a spin or two using real money, then check out our recommended casinos to get started. You might even be tempted to check out other related slots down below for more of the underwater experience.

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