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Diamond Supercharge Slot

3.1 / 5
Author: Will Wood
5 min read clock
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The Diamond Supercharge slot is a retro-inspired slot that’s hitting the market on the 14th of January, 2026. It takes the basics of a fruit machine and tries to take it to another level. It flips the standard grid layout on its side and adds multipliers and bonus rounds for a fun experience. We’ve got our sunglasses on to find out if we can handle the sparkle from these diamonds.
Provider

Provider

Iron Dog Studio
Type of Slot

Type of Slot

Newspapers
Theme

Theme

Gems, Classic Slot Machine
Reels

Reels

3
Paylines

Paylines

15
Stakes Range

Stakes Range

0.1 – 50
Bonus Features

Bonus Features

3
Free Spins

Free Spins

3+ Respins
Multiplier

Multiplier

2x–5x
Max Win

Max Win

5,000x
RTP

RTP

95.06%
Volatility

Volatility

High
View All

Diamond Supercharge Demo

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Diamond Supercharge Slot RTP, Details & Wager Limits

You’ll spot a lopsided set of reels in the Diamond Supercharge slot. It has a 3×5 setup, so it is a standard online slots grid flipped on its side. You get 15 paylines, which is below average and doesn’t match up to Megaways slots. 3 symbols on a line create a win, with 3 also being the maximum.

There’s a solid stake range in the Diamond Supercharge slot game. 10p per spin covers what low-budget players want from new slots. The top wager of £50 per spin is okay, but the best slots offer higher limits. All controls are at the bottom of the screen, so they don’t obscure your view of the reels. You can set up an autoplay, but it’s unavailable when using a UK online casino.

The Diamond Supercharge RTP is slightly disappointing. It’s below the market average at 95.06%, and there are RTP ranges. It means you’ll need to research availability at the UK’s best slot sites to make sure you get the highest RTP. It has a high volatility, which stood out to me while I was playing the Diamond Supercharge demo.

There’s a Diamond Supercharge max win of up to 5,000x the stake. It’s a frustrating one, as the mechanics make it possible to hit higher wins, but it cuts off as soon as you hit 5,000x. I managed 347x my stake while I put together my Diamond Supercharge review, which isn’t a bad payout. If this sounds like a game you want to try, the free slots demo is available above this breakdown.

Diamond Supercharge Theme—Lots of Sparkles

diamond supercharge slot base game

While it would be accurate to say the Diamond Supercharge slot takes a lot from classic fruit machines, it doesn’t feature any fruit as part of its symbols. It’s not an issue, though, as shiny gems make up the majority of what you’ll find on the reels. They match the name, and they’re nice and bright, so they stand out well. Iron Dog Studio has done a good job of making what can be an unoriginal theme into something engaging.

It’s a similar story with the sounds. The music here is an upbeat, pounding tune, which really sets an exciting scene. It ramps up slightly when you hit the bonus round, making it an enjoyable experience at Diamond Supercharge casinos. While the sounds when you spin the reels are slightly generic, they’re drowned out by the excellent music.

SymbolPayouts/Info
diamond supercharge letter j symbol J3 = 0.5x the stake
diamond supercharge letter q symbol Q3 = 1x the stake
diamond supercharge letter k symbol K3 = 1x the stake
diamond supercharge letter a symbol A3 = 1x the stake
diamond supercharge blue gem symbol Blue Gem3 = 4x the stake
diamond supercharge red gem symbol Red Gem3 = 4x the stake
diamond supercharge green gem symbol Green Gem3 = 8x the stake
diamond supercharge diamond symbol Diamond3 = 10x the stake
diamond supercharge wild symbol WildSubstitutes for standard symbols and 3 = 50x the stake
diamond supercharge scatter symbol ScatterTrigger Hold & Win round; Collects all variants of Special Cash Symbols, with cash values and jackpot values on them

Diamond Supercharge Mobile Slot

diamond supercharge mobile slot

The Diamond Supercharge mobile slot retains the same layout as the desktop game. It makes it simple to switch between platforms. The controls are responsive, so there’s no waiting after tapping a button. It stays bright on smaller screens, so unless you turn your brightness down, you can see everything with ease.

Portrait is the best way to play Diamond Supercharge. As the reels are flipped over, it matches the longer nature of phones. It works well for mobile casino players and is a nice change-up from games that stick to landscape layouts.

Diamond Supercharge Bonus Features

There aren’t a huge number of Diamond Supercharge bonus features, but they do encompass the base game, making sure there’s some excitement on regular spins.

Cash Collect

The Cash Collect symbol can land on the middle reel at any time. If it lands at the same time as a cash symbol, it will claim the value. Jackpot symbols can also land, which are worth between 15 and 1,000x the stake. Multiple collect symbols can land at a time, and they all collect each cash value.

Hold & Win

diamond supercharge slot respins

The Hold & Win feature triggers when you manage to land a collect symbol and a cash symbol on the first and last reel. It then locks the collect symbol in place, claims the value of all cash symbols, and awards 3 respins. If you land multiple collect symbols, they will all be locked for the duration.

During this feature, only cash, collect, and blank symbols can land. Cash and collect symbols will reset the respin counter. Collect symbols are also locked if they land during the feature. Jackpot symbols are included as part of the cash symbols.

On each spin, up to 5 hot spot features can land, and they add between a 2 and 5x multiplier to that space. If it lands on a collect symbol, it starts with a 2x multiplier, which remains until the end of the round, and every time another one lands, it increases it by 1 to a maximum of 5.

The round continues until you run out of respins or manage to hit a total win of 5,000x the stake.

Bonus Buy (Unavailable in the UK)

If you want to jump directly to the Hold & Win feature, you can start the round for 70x the stake. The round triggers with at least 1 collect symbol but can begin with up to 5.

Diamond Supercharge Verdict: Needs Some Extras to be Great

3.1/5
Diamond Supercharge Slot
Diamond Supercharge is a decent retro slot, but it’s let down slightly by a relatively low number of bonus features.
Pros
Pros
Simple gameplay is easily accessible
Pros
Multipliers can impact the collect symbols
Pros
Jackpots are available in the base game
Cons
Cons
Limited bonus features
Cons
Only 15 paylines
Cons
Narrow betting range
Cons
RTP is lower than 96%

Diamond Supercharge is a decent slot overall, but it’s not quite at the level of the best games around. As the collect symbol can land in the base game, with jackpot symbols, you can land decent wins on normal spins. However, it only really becomes exciting when the Hold & Win feature starts. As the multipliers and potential for up to 5 collect symbols increase the win potential, this is where the biggest wins are possible.

As it’s a high volatility, the bonus round doesn’t hit that often, meaning it can turn into a case of spinning to hit the bonus. I’d prefer an extra base game feature or an additional bonus round. On top of this, the maximum payout isn’t as high as some of the other titles on the market, which also stops it from being an elite slot. If you enjoy retro-style slots, then this game will have something for you, especially with the fun bonus round.

To get a more modern experience, with a much higher maximum payout, Money Train 4 from Relax Gaming gives you the chance to play for up to 150,000x the stake.

More Slots by Iron Dog Studio

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Will Wood
Will Wood

356 Articles

Will is a seasoned writer with extensive experience in the iGaming industry. His expertise in slots and sports betting allows him to craft work that takes readers on an engaging journey through any topic. With a keen eye for detail, he provides intricate insights into slots, making him a leading voice in the iGaming sphere.

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