Diamond Mine Slot Review, Blueprint’s First Megaways and Its Tribute to Bonanza

Diamond Mine is the Blueprint Gaming Megaways slot that turned the studio’s freshly-licensed Megaways engine into a Wild West mining cascade, 6 reels plus a horizontal carriage reel, up to 117,649 ways to win, TNT mystery barrels that detonate into matching symbols, and a free-spins multiplier that climbs with no ceiling toward a 10,000x stake max win, available to play free or for real money at UK casinos.

Released on 1 May 2018, Diamond Mine was the very first slot Blueprint built after becoming Big Time Gaming’s debut Megaways licensee, and it wears its inspiration openly: it is, by the studio’s own admission, a tribute to Bonanza, recast from a gold canyon into a cartoon diamond mine with a twangy banjo soundtrack. Its lasting contribution was the TNT mystery symbol, barrels that explode to reveal one matching icon across the grid, a wrinkle Bonanza never had, and one later borrowed by Buffalo Rising Megaways and Irish Riches Megaways. For UK players weighing up slots like Diamond Mine, it remains the cleanest, most affordable way into Blueprint’s sprawling Megaways catalogue.

Diamond Mine casinos

Play Diamond Mine slot game at these top UK-licensed casinos. 18+ only, please gamble responsibly. Visit BeGambleAware.org for free, confidential support.

Diamond Mine Slot, Pros and Cons

Reviewed by Paul Stone
Published: August 2018

Our hands-on take after spinning Diamond Mine across base game and free spins.

Pros

• The free-spins multiplier never resets and never caps. Every cascade during the bonus nudges the global multiplier up by one, so a single long reaction chain can quietly turn a 12-spin round into the run that defines your session, the ladder, not the base game, is where Diamond Mine lives.
• TNT mystery barrels add a genuine jolt of anticipation. When two or three powder kegs land, you watch them detonate together knowing they will all reveal the same symbol, and on a full 117,649-way board that shared reveal can paint a high-pay icon across all six reels at once.
• Low 20p entry for a full Megaways engine. You get the complete 6-reel-plus-carriage setup, cascades and the unlimited multiplier from the smallest stake, which makes it far friendlier to a modest bankroll than many high-variance Megaways rivals.
• The feature buy is honestly priced. At 100x stake the bonus buy skips the long, scatter-starved base game many Bonanza-style slots are known for, and it costs the same as the Buffalo Rising buy players already trust.

Cons

• A 10,000x ceiling is modest for the format. The slot it pays tribute to, Bonanza, tops out at 26,000x, so Diamond Mine asks you to accept high volatility for a top end less than half its inspiration’s.
• The base game is a long wait between bonuses. Most of the RTP sits in small cascade wins, with the headline free spins triggering on average only once every several hundred spins, fine for play-time hunters, frustrating if you want action.
• Some operators run a lower RTP build. Alongside the headline 96.43% there is a reduced configuration in circulation (around 95.75%), so the return you actually get depends on the casino.
• It can feel dated next to its own descendants. The flood of Blueprint Megaways clones that followed, many with bigger top ends or extra modifiers, has left the original looking spare, and there is no gamble feature on the standard build.

How Diamond Mine Works

Diamond Mine runs on Big Time Gaming’s Megaways engine, sub-licensed to Blueprint. The six main reels each show between two and seven symbols on every spin, and an extra horizontal carriage reel scrolls across the top of reels two to five. The number of symbols showing decides how many ways to win are active, anywhere from a few hundred up to the full 117,649 when every reel runs at maximum height. Wins pay left to right on adjacent reels from three matching symbols (the diamond pays from two), and there are no fixed paylines: any matching symbols on consecutive reels count.

Every winning combination triggers a Reaction. The symbols that paid explode and vanish, the ones above tumble down to fill the gaps, and fresh symbols drop in from above, all on the same stake. The chain continues until a drop produces no new win. In the base game these cascades simply chase another win; the real engine room is the free-spins round, where each cascade also raises the win multiplier.

Symbols and Paytable

The symbol set is classic Blueprint cartoon: low-pay playing-card suits sit beneath higher-value mining icons, the lantern, pickaxe, dynamite plunger and the prospector, with the sparkling diamond as the premium symbol that pays from just two in a row. The dynamite stick is the Wild, landing only on the horizontal carriage reel, and it substitutes for everything except the scatter. The gold sack is the scatter that unlocks free spins, and the TNT barrel is the mystery symbol that reveals one matching icon when it detonates.

Diamond Mine Free Spins and the Unlimited Multiplier

Land four or more gold-sack scatters and the free-spins round begins with 12 spins. This is where Diamond Mine separates itself from the base game: the win multiplier starts at 1x and climbs by one with every single cascade, with no cap for the duration of the round. A long reaction chain therefore compounds, a win at 8x followed by another cascade pays the next at 9x, then 10x, and so on. Landing three or four more scatters during the round retriggers it for five or ten additional spins, so a hot run can stretch well beyond the opening dozen while the multiplier keeps rising.

TNT Mystery Symbols

The mystery mechanic is Diamond Mine’s signature addition to the Bonanza blueprint. TNT powder barrels can appear on any spin, and when they do they all explode at once to reveal the same randomly chosen symbol. They show up occasionally in the base game but far more frequently inside free spins, so when several barrels land mid-bonus with the multiplier already elevated, that synchronised reveal is the moment that signals a big win is coming. Buy the feature for 100x stake if you would rather skip straight to the round; the standard game has no gamble ladder, though Blueprint’s “Extra Gold” variant adds one.

Our Verdict on Diamond Mine

Diamond Mine matters more for what it started than for what it pays. As Blueprint’s first Megaways slot it set the template for a decade of the studio’s output, and the TNT mystery barrel it introduced became a genre staple. As a game to play in 2026, it is a tidy, affordable, genuinely high-variance cascade with a free-spins ladder that can run hot, but a 10,000x ceiling looks slim beside the 26,000x of the Bonanza it honours, and the base game tests your patience. It is for players who enjoy the slow-burn rhythm of cascades and the climb of an uncapped multiplier, and who value low-stake access over a headline top prize. It is not for players chasing the biggest possible win or fast, frequent action. If you like slots like Diamond Mine, the natural next steps are Bonanza Megaways for a bigger top end, Buffalo Rising Megaways for the same mystery-symbol thrill with a bonus buy, or Diamond Mine 2 Megaways for the modern remake.

SlotsLike rating: 7/10

Diamond Mine Demo Play

Top 5 Biggest Wins on Diamond Mine slot

Creator: CasinoDaddy
Date: 19th January 2021
Casino in the Video: AboutSlots

This video has a good intro and then we can see a slot name Diamond Mine, there is a streamer present in this video holding a stream to entertain his viewers. The live chat is also present to cheer him up, the game has a good interface and the RTP percentage is also very of this slot. The first few spins did not give him anything good but a few multipliers and after that a big win of 320.00 which was very huge for the streamer and it cheered him up.

Creator: Kongebonus
Date: 17th November 2020
Casino in the Video: KongeBonus

In this session we can see a streamer present and playing a slot name Diamond Mine, there is also a live chat present to see the live gameplay. The slot has a different feature like spins or wheels, the streamer tries his luck on spins and does not win anything big at the start but as soon as the video moves on the streamer won some multipliers which results in a mega win of 1, 769,00 which was surprising for both streamer and his chat, his luck was with him and the timing got right which lead him to win.

Creator: David Labowsky – Casino Streamer
Date: 15th April 2019
Casino in the Video: David Labowsky

This is a streamer recorded session in which he is trying to get a good win on the slot Diamond Mine and the live chat is also present here to cheer him up for more. The slot has a good interface and the design is also very good, the streamer starts spinning some but at the start, he won nothing but some multipliers but as soon as the multiplier groups, the streamer won a heavy win of 1708.00 which was unbelievable for both him and the chat. The game has a good return percentage and the luck was onto him.

Creator: SPINLIFE
Date: 25th October 2019
Casino in the Video: Jack’s Bonuses

This is a video including a live streamer playing a slot Diamond Mine and a chat is also present to boost up the morale for him. The slot has some nice giving as we can see at the start of this video, the streamer won up some free spins. The slot interface is very user-friendly and the streamer tries his luck on the spins and soon after spinning for some he won a mega win of 4,137.00 which was great for him and he thanked his luck for this victory.

Creator: SPINLIFE
Date: 17th December 2019
Casino in the Video: Jack’s Bonuses

IN this video we can see a group of two people playing a slot name Diamond Mine, players are friends and the live chat is also present to see them play. AS soon as they start playing they won some free spins and multipliers but after some random spins, they won a heavy victory of 1,467.00 which was surprising for both of them, and ht chat begins to applaud them. The slot has a good percentage and the players got some luck to win something like it.

Slots like Diamond Mine

Diamond Mine most similar slot games include Hound Hotel, Inspector Gadget, Bork The Berzerker Hack N Slash Edition and Doctor Love.

Hound Hotel is a slot built by Microgaming. You spin a 5-reel, 3-row grid with 25 paylines in play. On the bonus side you get free spins, expanding wilds, increasing multipliers and improving symbols. Look out for stacked wild symbol substitution and scatter dog symbol trigger free spins. You can bet from 0.25 to 37.5 per spin, leaving room for cautious and bigger play alike. It returns 96.25%, which is medium-high for the market. Treat it as a guide to long-run payback rather than a promise for any one session. It plays at medium-low volatility, which means wins land fairly regularly and tend to be modest, which keeps sessions steady. Players who like it tend to try Wonky Wabbits as well. If you liked Diamond Mine, Hound Hotel is an easy one to try next.

Inspector Gadget is a Cash slot from Blueprint. It is played across a 5×3 grid with 50 paylines. Stakes run from 0.2 up to 200 a spin, so it suits both small and larger budgets. Headline features include colossal symbols, additional paylines, increasing multipliers, near miss feature and win modifier. In play that shows up as ringing phone triggers modifiers. Expect medium volatility here, so you get a balanced pace, with wins that are neither tiny nor rare. It returns 96.49%, which is medium-high for the market. That figure is a long-term average rather than something to expect back each session. It is frequently grouped with Cashville. It sits close to Diamond Mine in feel, making it a natural follow-on.

Bork The Berzerker Hack N Slash Edition is a slot built by Thunderkick. You spin a 5 reel, 3 row grid with 20 paylines in play. Return to player sits at 97.34% and counts as high overall. As ever, that is a theoretical average measured over a huge number of spins, so short sessions vary. It plays at medium volatility, which means you get a balanced pace, with wins that are neither tiny nor rare. You can bet from 0.1 to 100 per spin, leaving room for cautious and bigger play alike. On the bonus side you get free spins, expanding wilds, additional paylines and improving symbols. Fans often line it up alongside Goldilocks and the Wild Bears. Fans of Diamond Mine should find plenty to like here.

Doctor Love comes from NextGen. The reels form a 5×3 layout offering 20 paylines. The feature set covers free spins and tripled wins. Look out for 3 times higher winning. It plays at medium-low volatility, which means smaller wins come around often, so the balance moves more smoothly. It returns 95.00% and counts as medium overall. As ever, that is a theoretical average measured over a huge number of spins, so short sessions vary. You can bet from 0.01 to 500 per spin, leaving room for cautious and bigger play alike. It is frequently grouped with Crystal Land and The Rat Pack. Fans of Diamond Mine should find plenty to like here.

HOUND HOTEL:- Hound Hotel is an interesting slot game that was developed by Microgaming Limited. It’s feature description includes- Multipliers Bonus, Scatter Dog Symbol Trigger Bonus Rounds and Free spins bonus. It has a layout of medium-low volatility, 5 reels, 3 rows and 25 paylines.

INSPECTOR GADGET:- is another mid range game developed by Blueprint Gaming. It’s RTP Category is Medium-high while it’s volatility is just Medium. It has a Ringing phone trigger modifier bonus, Collossal Symbols bonus rounds, Additional paylines bonuses and Near Miss bonus. It has got just 5 reels,3 rows and 50 paylines.

BORK THE BERZERKER HACK N SLASH EDITION:- is a cool slot game developed by Thunderkick. They have put in their best and designed this game with a medium volatility, 5 reels, 3 rows and 20 paylines. It has other bonus features such as Improving Symbols Bonuses, Free spins bonus and Additional paylines bonuses.

DOCTOR LOVE:- is a slot game developed by Nextgen Gaming. The most striking feature of this slot game is it’s Triple Wins Bonus. It also has 10 free spins bonus rounds,5 reels, 3 rows, 20 paylines and a medium-low volatility. It has amazing love graphics for you.

Diamond Mine slot critic’s reviews

SpinGenie.com: The Diamond Mine slot online was created and developed by Blueprint Gaming. Since the release of the original Diamond Mine online slot a variety of different renditions of this slot machine has been created but for now we’re focussing on the classic title.

VegasSlotsOnline.com: A new release from provider Blueprint Gaming, Diamond Mine takes us back in time to the days of the Wild West. You’ll enter a mysterious mine in search of something other than diamonds: big wins. This cartoon-style video slot presents a fun and captivating theme that fits in beautifully with the concept of gaming.

SlotCatalog.com: Diamond Mine is a slot full of action and it comes with a good old Wild West theme emphasized by the soundtrack and sound effects.

WhichBingo.co.uk: Diamond Mine has a cartoon style theme based on the American Wild West, back when men used to mine for gold and treasures.

More games like Diamond Mine

Diamond Mine is largely an Cartoon themed slot with some references to Mining and Adventure themes.

Cartoon slots you might enjoy

The Diamond Mine Slot game primary theme is Cartoon while it makes other references to adventure and mining themes. The game is a fun one because you will choose a cartoon character which will lead you all the way in your adventure to hit the jackpot. As the game name implies, you are seeking for treasures during the course of your adventure especially Diamond and at the same time you have to always escape from the mine where you want to pack your treasures so the rocks don’t come crashing upon you. There are others in this cartoon themed list such as Doctor Love, Show me the bunny, Hoot Loot and even Pelican Pete.

Diamond Mine is a Cartoon themed slot game. Similar Cartoon themed slots include Doctor Love, Hoot Loot, Show me the Bunny and Pelican Pete.

Doctor Love

Other Blueprint Gaming slots to try

Blueprint Gaming is a UK studio, based in Newark, that develops both online slots and physical gaming cabinets, and has been part of Germany’s Gauselmann Group (the parent of the Merkur brand) since the late 2000s. It operates under a UK Gambling Commission licence, alongside Malta and Alderney approvals. In 2018 Blueprint became the first studio outside Big Time Gaming to be granted a Megaways licence, and Diamond Mine was the very first game it built with that engine, the foundation for a Megaways range that now spans Fishin’ Frenzy Megaways, Return of Kong Megaways, Wolf Legend Megaways and dozens more, many linked by the studio’s proprietary Jackpot King progressive network. Other Blueprint Megaways titles worth trying after Diamond Mine include Legacy of the Gods Megaways, Temple of Treasure Megaways, Pirates Frenzy and Diamond Jackpots.

Here are the best similar Blueprint online slots to play, these slot games are all developed by the same developer as Diamond Mine, the online slots are Legacy Of The Gods Megaways, Temple Of Treasure Megaways, Diamond Jackpots and Pirates Frenzy.

Top casinos to play Diamond Mine

Aladdin Slots

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Kassu

Kassu is a website that manages to offer the Diamond Mine slot within its games that it offers to the players, the website includes some industry-leading titles in its gaming inventory and the players can win huge cash prizes on these titles. The promotions that are offered on this online casino offer a lot of perks and players can claim these offers by going on the promotions section of the website, the welcome bonuses that are offered on this online casino offer the players to claim £100 in bonus funds along with 300 free spins. The details related to all of the bonuses are mentioned in the promotion section and these details are written in simple English to ensure everyone can easily understand.

Clover Casino

Clover Casino uses the software from Grace Media Ltd and the website includes all of the latest services that are provided by the partners of the owner company, the players get an amazing selection of games to enjoy along with a good number of bonuses and perks. The players also get an amazing customer support service that is also ready to help their player and the players can also get in touch with the agent through the website. The agents are nice and behave well with all kinds of players, they try to solve the issues as soon as possible but major issues can take some time.

Casino Lab

The players can enjoy all of the new titles on the Casino Lab because it offers every latest game from popular development to its players, the website also has a bunch of offers to boost the session of the players. The website is completely secure and licensed to ensure that the players can easily trust this casino for their money, this casino has two licenses one from the Great Britain Gambling Commission while the second from the Malta Gaming Authority. The security system protects all of the services that the website has to offer from all kinds of threats.

Diamond Mine, Key Stats

Here are the verified key statistics for the Diamond Mine slot.

Diamond Mine slot information last reviewed: May 2026

Diamond Mine Screenshot

Diamond Mine Bonus Features

Diamond Mine Paytable

Slots with the same bonus features as Diamond Mine

Diamond Mine has similar slots with the bonus features: Free Spins, Collossal Symbols, Golden Symbols and Megaways Feature.

Other slots with Free Spins

Our Recommended slots with Free Spins are Amulet Of The Pharaoh, Gold Trophy, Star Trek and Mistress Of Fortune.

Amulet Of The Pharaoh

Games with Collossal Symbols

The top slots with Collossal Symbols are Release The Kraken and Return Of Kong Megaways.

Online slots with Golden Symbols

Our Recommended slots with Golden Symbols are Release The Kraken and Return Of Kong Megaways.

Online slots with Megaways Feature

Our Recommended slots with Megaways Feature are Diamond Mine and Ted Megaways.

Diamond Mine Slot FAQs

What is the Diamond Mine slot RTP?

The headline RTP is 96.43%, which is a touch above the industry average. Be aware that some operators run a reduced build of around 95.75%, so it is worth checking the return stated in the game’s info screen at your chosen casino before you play.

What is the maximum win on Diamond Mine?

The maximum win is 10,000x your stake, achieved through the unlimited multiplier in free spins. There is also an absolute cash cap of £250,000, so at higher stakes the win is limited by that ceiling rather than the multiple.

Who makes the Diamond Mine slot?

Diamond Mine was created by Blueprint Gaming, the UK studio owned by Germany’s Gauselmann Group. It was Blueprint’s first ever Megaways game, released in May 2018 after the studio became Big Time Gaming’s debut Megaways licensee. View the top Blueprint slots here >>

Is Diamond Mine the same as Bonanza?

Not the same, but very close by design. Diamond Mine is Blueprint’s tribute to Big Time Gaming’s Bonanza, sharing the 6-reel-plus-carriage layout, cascades and an unlimited free-spins multiplier. The main difference is Diamond Mine’s TNT mystery barrels and its cartoon mining theme, and a lower 10,000x top end versus Bonanza’s 26,000x.

How do you trigger the Diamond Mine free spins?

Land four or more gold-sack scatter symbols to start the round with 12 free spins. During the round the win multiplier rises by one with every cascade and is uncapped, and landing three or four more scatters retriggers it for five or ten extra spins.

Can you buy the bonus on Diamond Mine?

Yes, at casinos that allow it you can buy the free-spins feature for 100x your stake, which skips the base game and takes you straight into the multiplier round. Feature buys are restricted or unavailable at some UK operators.

What slots are like Diamond Mine?

If you enjoy slots like Diamond Mine, the closest matches are Bonanza Megaways (the original it pays tribute to), Buffalo Rising Megaways and Diamond Mine 2 Megaways. On this page you will also find similar cartoon and Megaways titles such as Inspector Gadget, Hound Hotel and Return of Kong Megaways. View all slots like Diamond Mine here >>

Is Diamond Mine safe to play in the UK?

Yes, when played at a UK Gambling Commission-licensed casino. Blueprint Gaming itself holds a UKGC licence, and licensed operators are bound by UK rules on fairness, deposit limits and GAMSTOP self-exclusion. Always set a budget and treat the game as entertainment, support is available at BeGambleAware.org.