Released: 17 May 2022

How about leaving behind the regular slots for a minute and checking out something new and exciting? The developers at Golden Rock Studios have surprised us once again with a unique and rather original game, titled Bonus Only slot. The title may sound rather simple, but it perfectly encapsulates what the game can deliver. You can enjoy the masterfully designed visuals and unique gameplay, while also potentially winning up to a maximum of up to 1,750x the stake. You can read more about all the details of the Bonus Only slot in our in-depth review below.

Bonus Only Slot

Bonus Only Slot Online

One of the most interesting things about the Bonus Only slot is the fact that it combines the concept of slots with a board game to create a really exciting experience. Although not very often, we’ve seen the concept of board games incorporated in other video slots before, such as Big Time Gaming’s Monopoly Megaways slot and the Snakes and Ladders Megadice slot by Pragmatic Play. As for the Bonus Only slot, it comes with unique gameplay where the main focus is on the bonus round.

Table of Contents

  1. About Bonus Only Slot
  2. Design, Symbols and Graphics
  3. RTP, Variance and Payouts
  4. Gameplay and Features
  5. Bonus Only Slot on Mobile
  6. Slotswise Verdict

About Bonus Only Slot

Being on the iGaming scene for only a few years now, Golden Rock Studios would still be considered a relatively young company. However, despite all of that, the developers have managed to leave a great impression on both players and operators by creating excellent, high-quality video slots. The studio seems to just be starting, so now let’s see what this latest release has in store for you.

The layout of the Bonus Only slot is among the simpler ones, as it consists of 3 rows, 3 reels, and only 3 possible paylines. Landing 3 matching symbols across each of the rows will result in a win.

Players can also select from a great betting range, which offers options for both high rollers and those who prefer smaller stakes. The lowest bet is set at £0.09, while the highest is capped at £180 per spin.

Design, Symbols and Graphics

In the base game, you get to spin the reels on a slot machine, which retains that original vintage feeling. The slot machine is blue and gold, decorated with interesting patterns and there is also a golden lever on the side too. Pressing the spin button is accompanied by immersive animations of the lever being pulled and there is also a great soundtrack to accompany this as well.

As for the bonus round, the layout changes to a board game, while the backdrop presents a depiction of a city, based on which symbol triggered it. Tall buildings and bright lights are part of the experience, which can be quite an exciting one. What’s more, the game also comes with sharp graphics that can make the whole experience more immersive.

Bonus Only Slot

In terms of symbols, the paytable is not very populated. First, the pink diamond is a non-winning symbol. It is followed by Vegas, Macau, and Monte Carlo symbols, where each one can only land on the first, second and third row, respectively. 

Finally, the dice symbol acts as the wild, which can substitute any of the rewarding symbols and trigger the bonus round. 

RTP, Variance and Payouts for Bonus Only Slot

This is a low volatility game, which means that rewards can land a lot more frequently, but they may not be very high in value. The maximum possible payout that can potentially be achieved in this game can reach up to 1,750x the stake.

The Bonus Only RTP is capped at 96.21%, which is a good above-average value.

If you want to learn more about the RTP and the volatility of these games, you can take a look at our detailed Variance, Volatility and RTP Guide.

Gameplay and Features on Bonus Only Slot

As we already mentioned, the title of the game perfectly describes it as well. Namely, prizes cannot be won in the base game and the only thing that you can do is trigger the bonus round.

Bonus Round Feature

Landing 3 matching bonus symbols across a single row will activate this feature. The feature begins with 2 dice rolls unless you trigger it with a wild symbol, in which case you will receive 4 dice rolls. Each position on the board has a multiplier value and landing on it will add that value to the win multiplier above.

There are also special question mark positions which allow you to choose a card that can reveal a multiplier, an extra dice roll, or how many positions to move forwards or backwards. What’s more, managing to land the same number of both dice will award you an additional roll.

After managing to make a full lap around the board, the highest multiplier will be added to all positions. The multipliers in the Vegas, Macau, and Monte Carlo bonus rounds can potentially reach up to x40, x80, and x400, respectively.

Bonus Only Slot Bonus Feature

Bonus Only Slot on Mobile

You can also play the Bonus Only slot on smartphones and tablets that run on Windows, Android, or iOS operating systems. This is made possible thanks to the HTML5 technology, which means that you can open the game directly in the browser, without the need for any additional downloads.

Other Golden Rock Studios Slot

Here are some other great slots by Golden Rock Studios!

6 Jewels - this is a very colourful space adventure, which takes place on a 5x5 layout that can also expand. The medium-high volatility is combined with a maximum win potential of up to 6,094x the stake. As for the RTP, it is capped at 96.09%.

Higher Forces - this game combines mythology in a rather colourful manner and you can spin a layout of 4 rows and 5 reels, for the chance to win up to 1,538x the stake. This is a medium volatility game, which also comes with a theoretical RTP of 96.09%.

Book of Inti - a 5x3 layout is what this Aztec-themed game takes place on and there is also a maximum win potential of up to 5,500x the stake. The high volatility is paired with a great RTP value of 96.06%.

Slotswise Verdict

The unique concept of the Bonus Only slot makes it stand out from the crowd, plus you can still experience a very fun and engaging gaming experience. The fact that all the action takes place in the bonus round might not be very appealing to some players, but it can still provide great excitement.

On the other hand, it seems that the animations in the Bonus Only slot are a bit laggy, but the sharp graphics and colourful visuals can more than make up for it. You can check out the Bonus Only demo at some of the casinos we offer here on SlotsWise.

Discover the Bonus Only slot by claiming a welcome offer right from this page and play at top-rated online casinos. 

Key Features
  • ProviderGolden Rock Studios
  • Reels3
  • Min Bet0.09
  • Max Payout1750.00x
  • RTP96.21
  • Paylines3
  • Max Bet180.00
  • Bonus Rounds1
  • VarianceLow
About The Author

Kosta Kostadinov


Kosta is an experienced writer who enjoys testing and reviewing online slot games. He understands how they work and how to include the most relevant aspects in his reviews. Contact Kosta @

Similar Games
Want great offers sent straight to your inbox?

Enter your email below and we’ll do all the hard work for you

Welcome to our Mailing List

Keep a look out for our emails containing great offers!