| Casino Review May 2023
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Slot Max Miner — Game Review

Golden Osiris

Play’n GO have never been one to shy away from new releases, committing to releasing 52 new slots in 2020. However, if there’s one area in which they have dominated, its grid slots. They have continually produced grid games that each have their own unique play point, whilst being aesthetically appealing, and packing potential, including Reactoonz, Honey Rush, Tome of Madness, Wild Frames, and their more recent Diamond Vortex.

Now, they’re bringing us back to Egypt with Golden Osiris, their latest release. Set on a 7×7 grid, this slot is as visually appealing as the music is soothing. Symbols stand out from one another, with premiums clearly distinguishable from the lower paying symbols, and volatility is high, with a max win of 12,000x bet. The RTP on this slot sits at 96.27%, and we suspect we’ll see some exceptional wins on it if it’s anything like its’ grid based predecessors.

Golden Osiris Base Game

There are 9 symbols within this slot, consisting of 4 standard symbols, and 5 premiums. The 4 lower paying symbols are gems; green, blue, yellow and red in colour. Green and blue gems pay 3x bet at the highest level of 15+, and yellow and red pay 4x bet, again for a cluster of 15 or more. The first two of the premium symbols are blue birds and green cats, where pays start at 0.4x bet for the minimum cluster of 5, up to 8x bet for 15+.

Purple Ankhs are up next, starting at 0.6x bet for 5, up to 12x bet for 15+, followed by blue dogs, paying 1.6x bet for 5 of a kind, up to 25x bet for a cluster of 15 or more. Finally, the highest paying symbol, a red scarab, pays 1x bet for 5, up to a whopping 50x bet for 15 or more. Wilds are in play too, and can have a multiplier attached.

Golden Osiris Base Features

There are a few different aspects at play during the base game on this slot. This is, of course, to be expected within a Play’n GO Grid Game. First, is the placement of wilds. At the start of every spin, up to 6 wilds are hidden underneath symbols on the grid. These are highlighted in gold so players know where they want their wins to fall. If a win is formed using the symbol on top, the wild appears once the symbols are removed. These wilds can have a multiplier attached.

The multipliers available are x2, x3, x4, x5, x7 or x10, attached at random, or can just be single, non multiplying wilds. It is worth noting that if a win is formed using two of these multiplying wilds, only the highest multiplier is applied to the win. However, even though only the highest multiplier from the multiplying wild selection is applied, it is multiplied together with any multiplier that has been provided by the pyramid charger.

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Golden Osiris Pyramid

The second feature at play during this slot is the pyramid feature, on the right hand side. This is a common mechanic in Play’n GO grid games, and is something we can vaguely recognise from Reactoonz, Tome of Madness, Honey Rush or Wild Frames, each of which require players to achieve wins which build a meter. Of course, in these previous slots the meter is what eventually leads to the bonus, which is not the case within Golden Osiris.

This time, the pyramid meter is used to enhance the base feature, as 3 scatters trigger the free spins feature. 25 winning symbols charge the pyramid, where one symbol is chosen at random to expand. The chosen symbol then transforms adjacent symbols to trigger more wins. The pyramid feature can be re-triggered also. The first retrigger awards a x3 multiplier to any subsequent wins. Every re-trigger thereafter increases by x3, up to x30.

Finally, the base game of Golden Osiris offers players a “Second Chance: Scatter Explosion”, which is activated if 2 scatter symbols are in view on the grid at the end of a spin. When this is activated, any adjacent symbols to the scatter symbol are removed from the grid. This offers another chance for the third scatter symbol to land. This feature can activate once per spin, but is not applied during the free spins feature.

Golden Osiris Bonus

Landing 3 scatter symbols triggers the free spins feature, where 5 free spins are awarded to players. During free spins, the pyramid is fully charged on every spin, and can only choose premium symbols to expand. Adding to the excitement, the pyramid charger can retrigger during the feature too. Again, this starts with a x3 multiplier on the first retrigger. This then builds by x3, up to a maximum of x30. Each time there is no win left on one of the free spins, and the pyramid charge has not re-triggered, it resets to being fully charged ahead of the next spin.

Any multiplier awarded from a retrigger on the spin before does not carry over, though. As in the base game, if there are any multiplying wilds attached, only the highest available is awarded to the win. This is then multiplied together with any multiplier awarded by the pyramid charge.

Although only 5 extra symbols are needed to charge the pyramid compared to other well known games such as Honey Rush or Wild Frames, those extra 5 symbols can feel almost impossible to hit. Where Golden Osiris slightly lacks, however, is that once the pyramid meter reaches 25, it does not continue to charge past that point to the next level until the charge has been used. This differs to it’s predecessors, meaning getting a cluster of wilds isn’t advantageous for retriggering the pyramid charge. Overall, the bonus can feel very difficult to reach. With a volatility level of high awarded it does pack a punch with potential, though. We have seen a few poor bonuses on this slot, which is to be expected from a higher volatility slot.

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Golden Osiris Bonus Feature

First Impression

Is this my favourite grid game from Play’n GO? Far from it. However, is it a solid addition to their catalog? Absolutely. It is, in ways, all too similar to the grid games that have come before. That said, it just keeps things interesting enough to save being branded a reskin. There are some elements within this slot that are great additions to Play’n GO’s grid format. This includes features such as the second chance scatter, and growing multipliers as the pyramid continues to charge. However, in a few ways it falls short.

In our limited experience this isn’t a “quick bonus” slot, something players often look to Play’n GO for. This is particularly true within a Grid Format. Volatility is high, and indeed wins reflect this, with a top win of 12,000x. A great addition to the vast array of Egyptian Slots Play’n GO have tackled in the past, sure. However, we feel it’s not quite interesting enough to stand alongside some of the greatest grid games on the market such as Reactoonz and Wild Frames.

*The screenshots taken of games reviewed on this site are taken from Demo Play, as reviews are often written before games are released for real play.

Gem Miner Slot — Review, Free & Demo Play

Gem Miner Slot - Review, Free & Demo Play

Gem Miner is an interesting slot machine created by the Expanse Studios provider. The game was released on 26/12/2021. You can play the game both from PCs and mobile devices. Moreover, you can test the slot for free if you launch a demo mode. This review describes the slot’s RTP, volatility, max reward, etc.

Software:Expanse Studios
Release Date: 26.12.2021
Volatility: Medium
Max. win:3,000x
Bonus game:No
Free spins:No
Scatter Symbol:No
Wild symbol:No
Symbol Stacked:No
Jackpot Game: No
Slot lines:3
Slot reels:3
Stakes range (€/£/$):1 to 1,000
Slot Theme:Gold mining

Best Casino Bonus for Real Money on this Slot Welcome offer: up to €400 + 150 Free Spins

Gem Miner Free Play

Gem Miner Slot - Review, Free & Demo Play preview

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How to Play

Use this short guide to start playing the Gem Miner slot.

  1. Click “I” to find out more about the game rules, features, payouts
  2. Apply “-/+” to set the size of your bet
  3. Press the Spin button to start the game

Gem Miner is an online slot with a simple 3×3 reel grid, and just 3 paylines. The minimum bet you can place in the game is €1, and the maximum reaches €1,000. The max reward in the game is 3,000x the bet. The slot has game symbols but they don’t offer any interesting features.

Gem Miner RTP and Volatility

Gem Miner is a slot with an RTP of 95.18% and medium volatility.

Gem Miner is a great slot machine that has an RTP of 95.18%. The slot’s volatility is medium. This means that you will be able to win average prizes with average frequency. So, if you like simple slot machines that pay good rewards, it’s high time to try out the Gem Miner slot.


Gem Miner

The theme of this slot machine is mining. The reels are set at the entrance of the underground mine. They are located inside the wooden structure and are filled with different minerals and gems. The background is dark. The soundtrack is simple but it adds to the theme of the game with a light and uplifting tune.

The game doesn’t have any special symbols. The game’s regular symbols are carbon, amber, gold, emerald, amethyst, and diamond. To win, you need to line up 3 matching symbols along 1 of the 3 paylines. There are wooden arrows pointing to each line that will let you know where a win has occurred and how much your valuable minerals cost.

Gem Miner slot paytable

Mobile Compatibility

Gem Miner slot mobile

Expanse Studios company adapts all new games to launch in mobile versions. Gem Miner slot can also be opened on smartphones and tablets. It supports most models on key operating systems. The mobile version is easy to use, it offers all the functions of the desktop version and is not inferior to it in terms of graphics quality. It opens quickly at low Internet speed and allows you to play comfortably even on devices with low performance.

About Expanse Studios

Expanse Studios started its activity in 2019. The provider creates games for online casinos. It produces 2 types of games: table and card games, and online slot machines. The developer’s content is endowed with incredibly great graphics, a large set of original bonuses, and exciting gameplay. In addition, all the suppliers’ games work on smartphones, tablets, and computers directly in the mobile browser.

Some of the games created by this provider are Book of Egypt, Lucky Betting Shop, Mayas Treasure, etc.

Space Miners Slot Review

Space Miners

The Space Miners slot will have you fully invested in an intergalactic adventure where each avalanching win opens up this slot game to an explosive 1 million ways to win.

This Space Miners online slot, instead, is 6 reels and 3-row game where symbols pay left to right with 729 ways to win. But when you get a win, the symbols explode, and any rocks or ‘blocker’ symbols will also explode.

Expanding wild and power-ups help your mission

There are two special features in this Space Miners mobile slot game that help you open up the ways to win.

The first is the wild that will expand to cover the reel, as big or small as it is. Then there are special power-ups hiding in the blocker symbols which can destroy horizontal, vertical, or blocks of rocks, helping to open up the reels.

You only get 2 power-ups in the base game, and they don’t trigger as often as we would like. But if you find 3 scatters, you’ll trigger 6 free spins that explode this Relax Gaming video slot to a whole new level.

The Space Miners slot free spins bonus has a top win of 50,000x your bet

As with so many of these expanding ways slots, the big features tend to hit with more impact in the free spins.

Why? Because you get not 2 but 4 power-ups on each spin, and they simply trigger more often, opening up the ways to win. However, what makes this Space Miners bonus special is that the blockers don’t return between spins.

Which is where you get close to those 1 million ways to win spin, and when you open up 6 reels and 10 rows of little aliens and gems, it’s one of the more exciting experiences we’ve had in a while.

And if you are really brave, you can buy the free spins for 100x your bet with a higher RTP of 97.14% instead of the normal 96.47%. Because being a space miner requires a whole load of bravery, but you get a whole load of fun at the same time.


  • Space Miners Mobile Slot Game
  • Space Miners Free Spins Bonus Game
  • Space Miners Slot Machine

Space Miners slot stats

Mobile Slot releasedFebruary 2022
Slot typeVideo Slot
SoftwareRelax Gaming
Slot reels / paylines6 Reels / 729 Ways to Win
House edge / RTP3.53% / 96.47%
Slot volatilityHigh
Min/Max bet0.10 / 20
Max win50,000x your bet
Free spinsup to 12 Free Spins / Power Ups
Bonus roundsCascading Reels, Expanding Wilds, Buy Bonus Feature
Slot ThemesAliens & Space

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In-game bonus features

Expanding Wilds: The mining cart is the wild symbol and will expand to fill all positions on the reel and substitute for any other symbols.

Avalanching Wins and Expanding Reels: The game starts with 729 ways to win but when you get a win along the rock line, the symbols touching the win don’t just explode but the rocks explode with it. This gives you more ways to win. If you unlock the full 6 reels and 10 paylines you will unlock one million ways to play.

Every time a win is achieved, you’ll get a respin of the reels, allowing you to unlock further wins and more ways to win. The game goes back to 729 ways to win on the next paying spin.

Power Up Rules: In the main game you will always have two powers up hiding in the rock on each spin. In the free spins, you’ll have 4. Each time you’ll be able to see it as little red flashing gems in the rocks.

The power-up activates when you get a win next to it, and they come in one of four ways:

  • Cross: Destroy all blockers in a horizontal and vertical line
  • Horizontal: Destroys all blockers in a horizontal line
  • Vertical: Destroys all blockers in a vertical line
  • 3×3: destroy all blockers in a 3×3 area

Free Spin Scatters: 3 Bonus symbols in the main game will trigger 6 free spins. You’ll get +2 spins for any extra that lands on a trigger, up to 12 free spins.

You get 4 powers up on each spin, and any blockers you open up stay open throughout the free spin bonus.

Landing a bonus symbol in the free spins will add a +1 spin to the free spin total.

Buy Feature: You can trigger the free spins by spending 100x your bet. You’re not just buying the free spin, you are also increasing the RTP of the overall game from 96.47% to 97.14%.

Space Miners Review Conclusion

It’s hard not to compare this to the Energoonz slot, but don’t be fooled. This is a far more traditional high variance slot, closer to what you’ll find in our Reel Rush 2 review than anything else.

The Space Miners slot has a top win of 50,000x your bet, a decent RTP of 96.45%, avalanching reels, and expanding ways to win from 729 to 1 million when you open up the whole game.

There’s a clever simplicity to this game, where you just spin to catch more gems, more aliens, and more ways to win. If you can get the free spins, that’s a nice bonus.

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Review by Lucky Mobile Slots , last updated: April 2, 2022 — Rating 5

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