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Octoplay and its in-house studio Penguin King have created a classic video slot with a Hold & Win feature and four fixed jackpots, the biggest of which can reach 5,000x your bet.
Each coin, diamond, and jackpot symbol can trigger the feature, and getting five of them in a single spin initiates the Hold & Win bonus game. Star symbols may award up to 20x, and wilds help connect winning lines during the base game.
As you can see, there is a lot going on in the Coins & Diamonds: Hold & Win slot, so before you try this title for real money at one of our top online casinos, I suggest you read my full review to gain a better understanding of the game and its features.
The aesthetics of the Coins & Diamonds: Hold & Win slot draws inspiration from classic Vegas slots. The layout resembles a 3D slot machine, with the bottom screen displaying a 5x3 grid and the top showing jackpot values.
There are eight base game symbols, including low-paying card royals and high-paying BAR, horseshoe, money, and triple-seven symbols. All symbols pay left to right on the five paylines. The wild can appear on reels 2–5, replacing all symbols except cash, diamonds, jackpots, and stars.
Even though my time with the Coins & Diamonds: Hold & Win slot wasn’t very successful, I still consider it a decent game. I would recommend this title to players who enjoy straightforward slots with minimal bonus features and simple mechanics.
The game has a simplified control panel with almost all buttons in the bottom right corner. Clicking the Stake button will open the menu with all the bet levels going from $0.10 to $150, a nice range that caters to players of all budgets.
The autoplay menu features options for 20, 50, 100, 200, and 500 automatic spins, along with advanced settings. You can choose for the autoplay to stop on a feature or once a certain multiplier threshold has been achieved.
The hamburger button opens the game’s menu and settings. The golden Buy Feature button lets you skip the grind and purchase the Hold & Win bonus round for 60x your current stake. Meanwhile, turning on the button in the top left doubles the chance for a feature but costs 60% of your wager.
The Hold & Win bonus can trigger whenever a special symbol (golden coin, diamond, and jackpot) lands on the reels. The said feature will automatically kick in if you get five of these symbols in a single spin.
You will initially receive three free bonus spins, with the special symbols locked in place. Every time a new special symbol lands, it will reset the free spin counter to three. The golden coin awards a cash prize up to 7x, the diamond collects all golden coin prizes in play, and the jackpot symbol awards the corresponding Mini, Minor, or Major jackpot prize.
The game ends once three consecutive spins are completed with no new special symbols appearing or when you fill the entire grid, in which case the Grand jackpot (5,000x) will be awarded.
The Coins & Diamonds: Hold & Win slot seemed fun from the moment I loaded the game. I gave it a few spins to test the gameplay and see whether I would like all the features and mechanics I'd only read about.
I started my real-money play with a $2 bet and enabled the Double Chance for Feature, which brought my total stake to $3.20 for this round. I had just over $300 in my bankroll, so I set up 100 autoplays, kicked back, and waited to see what would happen.
It wasn’t long before I got to the bonus round, where I won $48 and was already in the plus column. I had no luck triggering one of the jackpots, but I did get a few substantial base game wins ranging between $20 and $30.
Unfortunately, the subsequent several dozen autoplays were pretty uneventful and slowly started draining my balance. A single $50 win helped me bounce back a bit, but that, too, was negated by a dry spell that hit in the backend of my autoplay session. Once I played through all 100 spins, I had lost exactly $100.
My patience was wearing off, so I decided to purchase the slot bonus round for $120. This didn’t end well either, as I only won $58 with no jackpots to speak of. This was when I decided to end my session because I had already lost a significant amount of money.
Based on a test of 100 million spins, the game's RTP was calculated at 95.72 percent, which is under the industry average. The RTP goes up to 95.82% when you turn on the Double Chance button and peaks at 95.85% when you buy the feature.
Coins & Diamonds: Hold & Win has a relatively low volatility and hit rate. The slot’s Grand jackpot is 5,000x, but the biggest payout goes beyond that, capping at 5,585x.
Even though my time with the Coins & Diamonds: Hold & Win slot wasn’t very successful, I still consider it a decent game. I would recommend this title to players who enjoy straightforward slots with minimal bonus features and simple mechanics.
Coins & Diamonds draws inspiration from Double Diamond and Triple Diamond, well-known IGT classics I can also recommend.
If you wish to try other Octoplay slots, I suggest you check out Eternal Clash, Caishen Smash, and Cash Strike.
Of course, whether a game suits a player or not is completely subjective, which is why we have embedded the Coins & Diamonds: Hold & Win demo on this page for you to try out. If you end up liking the game, we have several licensed and legal online casino sites where you can try it for real money and chase the 5,000x jackpot.
Karolis Matulis is an SEO Content Editor at Casinos.com with more than 5 years of experience in the online gambling industry. Karolis has written and edited dozens of slot and casino reviews and has played and tested thousands of online slot games. So if there's a new slot title coming out soon, you better know it – Karolis has already tried it.
Read Full BioCoins & Diamonds: Hold & Win is a product of Octoplay, or more specifically, Penguin King, one of Octoplay’s in-house studios. The developer is a provider of more than 70 video slots, with some of its most popular titles being Twice as Nice, 777 Hot Reels, Cash Strike, and Twin Cash: Hold & Win.
Coins & Diamonds: Hold & Win is available for free play here at Casinos.com. You can practice and study the game’s features and mechanics before trying it for real money. If you run out of virtual currency, simply reload the page, and your balance will reset to its original value.
Octoplay is a niche casino game provider, and its titles are not as widespread as some of the games from NetEnt or Pragmatic Play. Still, we found this and some of its other top-performing titles at several top online casinos. For more info, feel free to check out our top lists.
To trigger the Hold & Win feature, you must land a special symbol during the base game, with five special symbols guaranteeing the bonus round. You’ll be awarded three re-spins, and the re-spin counter will reset each time a new special symbol falls onto the grid. If you fill the entire grid, you will win the 5,000x Grand jackpot.
To purchase the free spins round in Coins & Diamonds: Hold & Win, click the golden Buy Feature button in the bottom right corner next to the spin button. A window will pop up, showing you the prize of the feature, which is always 60x your current bet.
The Coins & Diamonds: Hold & Win slot came out on October 30, 2024, and is one of Octoplay’s classic-themed releases. This provider comes out with a couple of games every month, and you can keep up with the studio’s latest video slots by visiting its official website.
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