Double Diamond Slot Review and Demo Play

Or, play the demo
By playing, I’m declaring that I am over the age of 18.
Slot data
Min bet
Medium to high
Classic Vegas Game, Multiplier

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. The minimalist slot was first introduced online in 2005, but it’s been in land-based casinos since 1989.

Surprising to some extent, this Vegas classic developed by IGT is a popular choice among Canadian players. 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 Bet$1 CAD
FeaturesClassic Vegas Game, Multiplier
Double Diamond Slot General Information
Double Diamond Slot Main Screen
Double Diamond Slot Main Screen

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.

Paylines & 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.

The Double Diamond acts as both a Wild and a multiplier. With one Double Diamond, you get twice the regular win amount, while two – symbols payout four times the stake.

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

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. 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. Here are all the technicalities you need to know about the Double Diamond online slot machine.

  • 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. The Double Diamond slot strategy will involve picking a casino wisely.

  • Jackpot and/or Maximum Win

    Double Diamond is 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 which makes it a classic old-school slot.

Slot’s Special Features

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

Highest Combination

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

Main Symbol Wins

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

Any Bar Symbol Wins

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

Double Diamond Slot Winning Screen
Double Diamond Slot Winning Screen

Our Personal Experience – How Simple Is Too Simple?


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 we like the reel-machine look.


As for the audio, we enjoyed the background music, but it would have been nicer if each symbol had its 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.

We haven’t played many 1-payline slots, so checking out Double Diamond was an adventure. There are only 6 symbols, so matching them is not as tough. We started playing with C$100 and ended up with C$88, which is decently close to the RTP percentage. However, we have to say that only 20 manual rounds and then 20 auto spins were played.

During the session, we noticed that it’s not hard to land on a Cherry symbol, as I got 13 in 40 spins. We also liked that the Double Diamond symbol doesn’t only come in a combo with low-paying symbols. In terms of gameplay diversity, there’s nothing much you can configure – just test your luck, hit the spin button, and have fun while you are at it!

Double Diamond Slot FAQs

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, IGT has released a Triple Diamond slot, with a lower RTP of 95.06%, but 9 paylines instead of 3.