BetMGM Casino Game Exclusive: 12 Coins Grand Diamond Edition Review

BetMGM Mar 26, 2026, 9:15 AM

min read

The 12 Coins Grand Diamond Edition game banner. The background shows scattered diamonds flying through the air. In the foreground is a gold coin with the game title on it. Light shines from behind the coin.

BetMGM Casino exclusive with a bonus-first gameplay design.
Sticky Cash Out system offers running collection mechanics across multiple spins.
Win up to 5000x in prizes with the Hold the Jackpot bonus game.

This game stands out from other online slot machines by rewriting the script and completely skipping traditional line wins. Payouts come through feature mechanics, and you can even tweak the volatility and feature odds on each spin. Check out this online slot review to see what else you can do in this new twist on slots.

Play This Game with BetMGM Online Casino Bonuses

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No matter what kind of player you are, BetMGM online casino bonuses are generous and consistent. If it’s your first visit to the site, start off with the BetMGM Casino welcome bonus, valid only for new player registrations. For existing players, there are always multiple ongoing BetMGM Casino offers and promotions, ranging from limited-time game-specific bonuses to leaderboards and sweepstakes. Be sure to visit the page on how bonus codes work for more information and FAQs.

12 Coins Grand Diamond Edition Game Highlights

Fine-tune this game’s configuration to your liking and get ready for fast-paced prize collections:

BetMGM Casino exclusive: You won’t find this NYX slot game anywhere else.
Collection mechanics: No payline wins here. Instead, the Cash Out feature offers running collection mechanics that could come with a payout boost.
Hold the Jackpot: Bonus game uses hold and win mechanics, locking in cash prizes, mystery symbols, and jackpots.

12 Coins Grand Diamond Edition Quick Facts and Features

Software Provider	NYX
RTP	96.14%
Volatility	Variable
Jackpot Type	Fixed
Paylines	12
Reels	4×3
Max Wager	$100
Max Win	5,000x

* Please note that the return to player (RTP) rate for this slot game may differ from one jurisdiction to another.

Does the 12 Coins Grand Diamond Edition Game Pay Real Money?

Play this slot for real money with real-money wins if you’re registered with BetMGM Casino and you’re located in a legal US state where the casino is licensed to operate. BetMGM Casino is currently active in New Jersey, Pennsylvania, Michigan, and West Virginia.

How To Play the 12 Coins Grand Diamond Edition Slot

Before you play this slot online, it’s recommended to run through the game rules from the in-game menu, as there are a few settings you might want to get familiar with. When you’re ready to get started, run through these steps:

Set your bet: Use the betting controls to shift your base bet between $0.10 to $100. You also have the option to tweak the Chance Level for better odds of triggering features for either 2x, 5x, or 10x on top of the base bet.
Spin the reels: Hit the “Spin” button to start up individual games. But before you get your spins started, you can tweak the gameplay speed and volatility level for each spin sequence or lock in your settings for multiple spins using autoplay.
Watch for features: Look out for Cash Out overlays to kick off collection mechanics. Also, keep an eye on bonus symbols landing on the middle row to trigger the feature round.

12 Coins Grand Diamond Edition Game Features

You’ll notice the 12 Coins Grand Diamond Edition slot game has a few unique elements that make gameplay quite different from most online slots.

12 Coins Grand Diamond Edition Cash Out Feature

Cash Out is the feature you’ll feel most often during the base game. It plays like an extended version of the collection mechanics you see on some cash-themed slots.

A Cash Out label can appear on a random grid position and stick there for up to 20 spins. While it’s active, any eligible symbols that land on that reel add their value to the running total for the Cash Out. These can be Cash Coin, Cash Infinity Coins, or the Mini, Minor, and Major jackpot symbols.

When the Cash Out countdown for a reel runs out, the game draws a random percentage between 10% and 300%. This value is then applied to your accumulated total to calculate the final payout.

12 Coins Grand Diamond Edition Cash Infinity Feature

Cash Infinity symbols can appear in the base game and lock in place until you unlock and complete a Hold the Jackpot Bonus Game. They drop with cash values ranging from 5x to 15x the bet, but they don’t pay immediately. Instead, they get counted and paid along with other prizes at the end of the bonus game. If a Cash Infinity symbol lands on the middle row, it also increases your chances of triggering the Hold the Jackpot Bonus Game.

12 Coins Grand Diamond Edition Hold the Jackpot Feature

Triggering this bonus is all about the middle row. Landing four bonus symbols of any type, including any locked-in Cash Infinity symbols, on that row launches the Hold the Jackpot bonus game.

The feature starts with three respins, and any triggering symbols are locked in place. Any new bonus symbols landing on the grid will also lock in place and reset the respin count back to three. Your aim here is to fill the grid with bonus symbols, which awards the Grand jackpot prize.

Bonus symbols include a range of modifiers that play along with the main mechanics:

Cash Coin symbols: Award between 1x and 10x the bet.
Jackpot symbols: Mini, Minor, and Major symbols award their corresponding jackpot.
Treasure Chest collector: Gathers all Cash Coin and Cash Infinity values in view and applies a random multiplier between 1x and 20x.
Jackpot Mystery symbol: Transforms into either Mini, Minor, or Major jackpots.
Mystery symbol: Transform into any Cash Coin, Treasure Chest, or Mini, Minor, or Major jackpot.

12 Coins Grand Diamond Edition Slot Bonuses and Jackpots

As previously mentioned, this online casino game includes four fixed jackpot prizes. The Mini, Minor, and Major jackpots are valued at 10x, 20x, and 50x the bet, and can be awarded multiple times in a single sequence. The Grand jackpot is the game’s top prize, valued at 5,000x the bet.

How To Win the 12 Coins Grand Diamond Edition Game

Knowing how the game’s 96.14% return to player (RTP) works with other game mechanics is important. Each grid position is essentially an independent reel, giving the game 12 paylines. But the base game doesn’t play on symbol combination wins.

Instead, it uses randomized collection mechanics powered by various feature systems. The game also allows you to fine-tune the likelihood of triggering these systems through adjustable volatility and Chance Levels. Volatility levels affect the odds of prize collections via the Cash Out feature, while Chance Levels can be set to 2x, 5x, and 10x the base bet to increase the odds of triggering the Hold the Jackpot bonus game.

Without any traditional paylines and paytable combinations, winning this game comes down to balancing your game configuration. Base game wins come from the Cash Out collection feature, while the Hold the Jackpot feature sets you up for jackpot prize potential. Tweaking the volatility settings and Chance Levels can help you find the balance between the two.

12 Coins Grand Diamond Edition Game Graphics and Design

This diamond-themed slot game comes with subtle Asian influences in the aesthetics department. The interface itself is lit up with bright colors, sparkling gems, and flickering light bouncing off of metallic gold textures. Shimmering prism gems and diamond dust are scattered across the deep blue background, while the main interface is contrasted with bright red buttons and gold framing. Bonus symbols feature subtle animations when their mechanics kick in, while feature announcement screens feature smooth transitions.

The sound design features a cheerful synth jingle layered with slot chimes and swipes as the reels move and land.

12 Coins Grand Diamond Edition Slot Symbols

The game’s symbols include gold Cash Coins, jackpot Cash Coins, treasure chest Collection symbols, as well as green gem Mystery symbols and blue gem Mystery symbols.