1 Reel Reef ™ – Review, Bonuses, Free Spins, Free Play in Demo Mode

1 Reel Reef is a video slot machine that was developed by Spinomenal and it is available online. Its theme is based on the underwater world and this game has only one reel, 500x highest prize, RTP of 91.55%, and volatility unknown to me. It features progressive symbol wins and multiplier wins.

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You can read our review of 1 Reel Reef slot and plunge into the water world beneath the ocean surface, where you will occasionally see various marine life forms.

1 Reel Reef ™ - Free Play in Demo Mode

Dive into the world of 1 Reel Reef ™ and enjoy our exclusive Free Play in Demo mode. You can try this exciting slot without spending money to see how it works, explore its paylines, features and bonus rounds at no risk. Find your strategy in Demo mode, comprehend game mechanics and define a winning betting system for your future play. Unlock the excitement without spending a dime as you engage in Free Play, immersing yourself in the entertaining universe of 1 Reel Reef ™.Discover the game's unique mechanics, visualize potential winning combinations, and master your gameplay strategy—all in a no-risk environment. Try your luck in Demo mode today and prepare for an exhilarating gaming experience when you're ready to make a splash with real wagers.

Theme, graphics & soundtrack

The almost spooky aura of this piece is created by the muted shades of blue and green as the only sign of life is the bubbles moving in it while reel and progressive symbol counter provided all the colours for our eyes to feast on.

This is not the most sophisticated game in terms of visuals, animations or sounds but there is still a lot to love about this enigmatic slot that stands out from most modern-day slots.

1 Reel Reef RTP and variance

We are uncertain about the variance of this free Spinomenal slot, although it is obvious that the no deposit one has a theoretical payout percentage (RTP) of 91.55%.

How to play the 1 Reel Reef online slot

The game layout is highly user-friendly with self explanatory buttons for seamless gaming experience though the overall design of 1 Reel Reef is dark and mysterious. Although the overall design of 1 Reel Reef has a dark and mysterious aesthetic, the game’s layout is highly intuitive with self-explanatory buttons that support seamless gameplay. Even though 1 Reel Reef’s general design theme is murky and enigmatic, the game layout is highly logical featuring self-explanatory keys that make playing uninterrupted. Though generally characterized by a gloomy mood, 1 Reel Reef has an easy-to-understand arrangement as it features direct press buttons that help in smooth playing.

  1. Begin by clicking the question mark icon, which will open the paytable, run you through the rules of the game, and explain the bonus features.
  2. From the main screen, click the speaker icon to mute or unmute the game’s sound effects.
  3. Click the stacked coins symbol to set your preferred stake.
  4. Set an upper spend limit and ensure you use the self-exclusion and timeout features as part of your responsible gameplay strategy.
  5. Your balance will always be clearly visible in the bottom left-hand corner of the screen, so make sure you monitor this throughout to stick to your spend limit.
  6. Always avoid chasing losses and stop playing when the fun stops. 

Bet sizes & paytable wins

The minimum stake for players in the 1 Reel Reef is one cent while the maximum stake is ten dollars. Even though it’s not a no deposit slot to entice high rollers, it can still attract newbies.

Instead of a traditional paytable, 1 Reel Reef uses a progressive symbol feature with three symbols which can award you progressive wins. Once these symbols land on the game’s reel each counter bar will progress to the next level. These prizes can be collected by hitting the ‘collect’ button at any time; but when this button is pressed, all progress bars for each of the symbols will reset back to zero and you will have to start collecting these special symbols again.

Max-win 500x
Volatility High
Top RTP 92%

1 Reel Reef bonus features

Despite being just one reel slot, 1 Reel Reef has a limited collection of built-in characteristics meant to maintain the game’s simplicity and monotonous playing experience’s freshness.


The wild symbol in 1 Reel Reef plays a little differently than when it does in any number of other online slots. Once the clamshell and pearl wild symbols appear on the reels, every counter bar will immediately advance to the next level.

Reset crab

If the reset crab symbol shows up on the reels, all win prize progression is reset to zero and you must start building it up again. This feature might be a little annoying, but it brings in an interesting danger which results from progressives that you will have to time perfectly if at all you want to make your profits top notch.

Special wins

If a player reaches the highest point of the moving win bar of any of the three symbols, he/she will get higher value winnings every time that symbol appears on the reel. Luckiest players who fill all three bars for progressive wins shall unlock a jackpot prize. The top reward for a starfish special icon is twelve times while that one for fish is 100x and seahorse has 250x as its first prize.

1 Reel Reef review: our verdict

Spinomenal’s 1 Reel Reef slot is remarkable for its unforeseen feature that distinguishes it from the countless other online games. The maximum win in this game which is x500, can be considered low especially for beginners trying out the world of online slots.

In case you like playing online slots with high RTP, then the Rainbow Riches slot from Barcrest, WMS and Light & Wonder may be your choice. The Rainbow Riches is a medium variance no deposit slot featuring 20 pay-lines with 500x top win and 95% return to player rate.

1. DISCLAIMER: This website is not associated with Spinomenal and Spinomenal does not endorse it.


What is the Return to Player percentage of 1 Reel Reef and how risky is it?

It has an RTP (return to player) of 91.55 per cent, which is much lower than the 96 per cent average for modern online slots; however, as it is a one reel game, this is normal. Unfortunately, we cannot say anything about the volatility of this no deposit slot but our gameplay shows that it is high on the scale.

What is the largest possible win in the game 1 Reel Reef?

In 1 Reel Reef, players who are lucky enough could get a win of 500x their wager. That might not seem the biggest maximum win if compared to other internet slots, but it is worth remembering that this is a single reel slot game with an unusual progressive symbol win mechanic.

Exciting bonus features in 1 Reel Reef, does it have any?

This no deposit slot by Spinomenal largely depends on the progressive symbol win mechanic, which distinguishes it from the typical online slots developers have taken in past years. Watch out for the wild symbol that would move progress bar one step up from each symbol and turn around your next-spin pay out you see.

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