Double Diamond: Review & Free Demo

Slot data
Min bet
Classic Vegas Game, Multiplier

Double Diamond Slot Overview

Playing slots with thousands of paylines sounds fun, but it’s hard to follow the action. If you like paying attention to detail and getting immersed in the spins, the Double Diamond online slot will meet these needs.

IGT is famous for its 3-reel machines, and Double Diamond is no exception. Our Double Diamond slot review discusses the mechanics, symbols, volatility, and all slot features you should know about.

Software ProviderIGT
Min BetC$1
FeaturesClassic Vegas Game, Multiplier
General info

Double Diamond Symbols and Payouts

You’ll find six symbols and one payline on the Double Diamond real money slot.

Payouts happen if you get at least one Cherry symbol on the payline or three matching symbols. You also get paid if you get a combo of Bar symbols. Please note that the last paytable item isn’t an actual icon in the game, as it refers to hitting Bar symbol combinations.

Another fun thing about Double Diamond is that all symbols act as multipliers rather than giving you a fixed sum of coins. More on that comes up next.


The Double Diamond is the main attraction in this Double Diamond real money slot. It acts as both a Wild and a multiplier. With one Double Diamond, you get twice the regular win amount, while two Double Diamond symbols payout four times the stake.

Double Diamonds Slot Symbols
Double Diamonds
3 = 1000 x stake
Double Diamonds Slot Symbols
3 = 80 x stake
Double Diamonds Slot Symbols
Triple Bar
3 = 40 x stake
Double Diamonds Slot Symbols
Double Bar
3 = 25 x stake
Double Diamonds Slot Symbols
3 = 10 x stake
Double Diamonds Slot Symbols
3, Any 2, Any 1 = 10, 5, or 2 x stake
Double Diamonds Slot Symbols
Any Bar
3 = 5 x stake
Double Diamonds Slot Symbols


You won’t need any schematics to understand how this slot machine pays out. There’s only 1 payline. You might find it weird, but that’s the charm of classic reel machines.

Double Diamonds Payline

Double Diamond Slot RTP & Volatility

You could play Double Diamond in demo mode to figure out the configurations, but we’ve already done the heavy lifting. Here are all the technicalities you need to know about the Double Diamond online slot machine.

  • RTP – No Diamonds Here

    The Double Diamond RTP (Return to Player) percentage is 95.44%. This rate is a bit lower than our preference of 96%, but we wouldn’t wreck our minds about it.

  • Volatility

    This slot has a medium to high variance level, which means, in theory, you can expect bigger wins, but you won’t see them frequently. It’s fair to note that there’s no official IGT report on the volatility; we based our info on our experience with the game.

  • Min / Max Bets

    The minimum and maximum bets vary from one online casino to another. In some cases, the minimum limit starts at C$1, and the maximum is C$100, while in others, it starts at C$100. So, it’s safe to say your Double Diamond slot strategy will involve picking a casino with suitable betting limits.

  • Jackpot And/Or Maximum Win

    Double Diamond isn’t neither a progressive nor a fixed jackpot slot. There isn’t even a max win limit as your payout depends on your bet size. There are no special features that can drive the winnings through the roof. For instance, if you bet C$250 and get three Double Diamonds, your win will be 250 x 1,000 = C$250,000.

Slot Features

No matter whether you go for Double Diamond slot machine free play or real money, this slot is as simple as they get. There aren’t any Double Diamond free spins, bonus buys, or bonus rounds.

The thing you should know is how the payouts work. First, the usual – only the highest winning combination is paid. But it’s interesting that the Cherry symbol pays out even if you get only 1 of it.

You should also know that if you get one Double Diamond symbol, but no other symbols land on the line, you won’t win anything.

The only other thing relevant to the winning ways is the Any Bar symbol presented in the paytable. It is actually telling you that you can get a win if you land on Double and/or Triple bars.

The rest is standard, and the play screen rocks the following segments:

  • Play button;
  • Autoplay button;
  • Bet site section;
  • Info button.

Double Diamond Bonus Games

As mentioned, there aren’t any Double Diamond slot machine bonus rounds or Double Diamond slot free spins.

Double Diamonds Bonus Games
Double Diamonds Bonus Game

My Playing Experience – How Simple Is Too Simple?

I haven’t played many 1-payline slots, so checking out Double Diamond was an adventure. I was surprised that a spin could end with zero symbols on the payline, which makes winning calculations even trickier.

On a positive note, there are only 6 symbols, so matching them is not as tough. I started playing with C$100 and ended up with C$88, which is decently close to the RTP percentage. Though, I have to say I only played 20 manual rounds and then 20 auto spins.

During the session, I noticed that it’s not hard to land on a Cherry symbol, as I got 13 in 40 spins. I also liked that the Double Diamond symbol doesn’t only come in a combo with low-paying symbols.

I’d like to note that I was changing my bet amount while playing, and that’s one of the few Double Diamond slot tips I can give. There’s nothing much you can configure – just test your luck and hit the spin button.

You will either like this game or find it boring. I don’t think there’s a middle ground with it.

Graphics & Sound

The visuals are exactly what you’d expect from a slot almost two decades old. As someone who’s used to test video and 3D slots, this game felt way too simplistic. The symbols aren’t as detailed, but I like the reel-machine look.

As for the audio, I enjoyed the background music, but it would have been nicer if each symbol had its own sound when you get paid out. The sound is good overall, but if you were to play it for a longer time, the mute button might be your friend.

Best Double Diamond Alternatives

  • Starburst

    starburst slot

    If you’re into classics, there’s no better recommendation than the Starburst slot machine by Netent! This space-themed slot comes with an RTP of 96.09% and a maximum win of 500 times your bet.

  • Siberian Storm

    siberian storm slot

    Another IGT release, but this time with 720 ways to win and MultiWay Xtra mechanics. Try free Siberian Storm slots and see why this game is great for mixing things up. The RTP is on the spot, at 96%, and you get free spin rounds, too!

  • Thunderstruck 2

    Thunderstruck II slot

    Are you looking for a Scandinavian-themed slot with a maximum win of up to 8,000 times your stake? If so, you are ready to spin the reels of the Thunderstruck 2 slot game! Plenty of bonus features, 243 paylines, and a 95.65% RTP make this game memorable.

  • Fortune Coin

    Fortune Coin Slot

    Give Fortune Coin a try if you are looking for a low to medium volatility slot with an RTP above average, set at 96.20%. This IGT release is popular among casino newbies as it has four fixed jackpots and potentially juicy payouts.


How does the Double Diamond slot machine work?
Double Diamond is a slot with three reels and a single payline. All symbols act as multipliers, and the symbol combinations are determined by an RNG (Random Number Generator), guaranteeing fair outcomes.
What is the RTP on the Double Diamond slot machine online?
The RTP of this slot is fixed, set at 95.44%, which is 0.56% lower than the preferred industry average. Combined with the medium to high volatility, it’s a perfect slot for high rollers with a knack for vintage stuff.
Who makes Double Diamond slot machines?
IGT is the software provider that created this classic slot machine available in almost all land-based casinos worldwide, including Canada.
Are there any Double Diamond slot sequels?
Yes, IGC has released a Triple Diamond slot, with a lower RTP of 95.06%, but 9 paylines instead of 3.
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