Casino Game Review: Double Black Diamond (Everi)

min read
Double Black Diamond loading screen.
BetMGM Jun 19, 2024, 4:29 PM

If you’re looking for online casino games with a classic theme, then the Double Black Diamond slot machine by developers Everi is the one for you. It has simple gameplay, unique features, and a chance to win great jackpots. Read this slot game review to learn how to play it.

Game Overview

Although not a flashy slot game, Double Black Diamond contains all the essential features that make the game entertaining to play. This game, which is set to a classical music soundtrack, has a return to player (RTP) of 95.95%, offering decent returns for your money. 

How To Play

Playing this slot game is pretty straightforward once you understand its mechanics. Start by choosing your bet amount. Your minimum bet is $0.05 and varies based on your choice multiplier. You can choose between 1, 2, or 3 multipliers per round.

The next thing would be to hit the spin button and wait for the reels to work their magic. If you land a winning combination, you will be rewarded immediately. You can also set the auto spin feature from 1–100. Note that you can only access the jackpot game if you set the bet multiplier to the maximum.


The game’s aesthetics are designed to make players feel like they’re playing a traditional slot machine with mechanical reels. Other software developers might have tried to make the traditional slot theme look modern. In Double Black Diamond, the design team has focused on its integrated functionality in a game reminiscent of Vegas hall machine slots. While it lacks fancy animations, this online slot provides solid gameplay with rewarding payouts. 


This slot game is a 3-reel game with 9 active paylines, using a classic slot style where winning combinations are made on one line. It features simple and familiar symbols like diamonds, bars, and 7s. The Double Black Diamond slot also has bonus features that give you exciting rewards.

Like most classic online casino games, the Double Black Diamond slot machine gives you complete control over your wagers. You can place bets from as low as $0.05 up to $5.00. You can also customize your bets as 9, 18, 27, 45, or 90 credit max bets. Although the gameplay is simple, it features bonuses that are rewarding enough for players to enjoy.

Bonuses and Jackpots

What’s a slot game without bonuses? Thankfully, Double Black Diamond Slot has some exciting features you can enjoy.

Bonus Multipliers

There is a bonus multiplier feature that can give you up to 30x your winning amount. This occurs when you land two or more bonus multipliers on an active payline. This game uses the same 2x multiplier features as used in Triple Double Patriot slots online and Blue Ribbon, two other Everi slots online. These multipliers are available on triple 7s, double 7s, 7s, double bar, and single bar symbols. The number 7 and the single bar sign both offer 3x multipliers. The triple 7s, double 7s, and double bar combinations have a 5x multiplier each.

Black Diamond Symbol

The Black Diamond symbol acts as a wild, replacing lesser-valued icons in exchange for higher-value ones (except bonus multipliers and the 2X Black Diamond symbol).

2X Black Diamond Symbol

The 2X Black Diamond symbol functions as a second wild. It substitutes for all symbols except the bonus multipliers and the Black Diamond symbol to produce winning combinations.

Progressive Jackpot

This exciting slot game comes with a progressive jackpot. However, only the maximum wager qualifies for the progressive jackpot. Jackpot-triggering symbols must land on active paylines to award big wins. The top prize is won when you land three Black Diamonds on line 9. You’ll win the secondary prize by landing three Black Diamonds on any of the first eight lines.

Jackpots award flat credit awards below the maximum stake, with the amount won being proportional to the amount wagered per line. If you land three Black Diamonds on line 9, you’ll win 5,000 credits. Three Black Diamonds on any of the first eight lines pay out 300 credits. All wagers contribute to the progressive jackpot.

Similar Games 

Of course, the Double Black Diamond slot is not the only exciting game to play at a casino online. Below are some other options.

Double Fortune 

Like the Black Diamond online slot, this game also has a 3-reel classic setup and 9 paylines. It incorporates exciting features like the fortune wild, bonus multipliers, and double wild symbols. You’ll find striking similarities with Black Diamond and a decent RTP. 

Super Jackpot Double Lion

Super Jackpot Double Lion is one of the unique progressive jackpot slots. It features a rare double lion wild symbol in a standard 3-reel, 9-payline slot game. In contrast to the Black Diamond, this slot machine includes three special cat symbols, any two of which can unlock the game’s progressive jackpot. This classic slot game is worth a look if you’re interested in the best online slots with more intriguing action.

Double Up the Action at BetMGM

Whether you like your games slick and modern or infused with old-school charm, you’ll find something to suit your tastes at BetMGM. Register today to enjoy a mix of modern and classic online slots for money. BetMGM also offers a range of online casino table games, such as poker, baccarat, and roulette, along with live dealer games to bring the action home to you.

Actress Vanessa Hudgens flipping casino chips next to the text "The King of Casinos"
About the Author


Read More

Our BetMGM editors and authors are casino experts with a wealth of knowledge of the online casino industry at all levels. Their coverage includes company news, game reviews, how-to instructional articles, strategy guides, and editorials showcasing BetMGM’s superior product and game library.

Our BetMGM editors and authors are casino experts with a wealth of knowledge of the online casino industry at all levels. Their coverage includes company news, game reviews, how-to instructional articles, strategy guides, and editorials showcasing BetMGM’s superior product and game library.