3 Supercharged Diamonds Slot
3 Supercharged Diamonds: Hold and Win is a classic-format slot from Playson built on a 3×3 grid with 5 fixed paylines. The game uses the Hold and Win mechanic with simple visuals and symbols.
Three types of Special Diamonds sit above the reels - green, yellow, and violet - and each one determines which bonus mechanics activate when the Bonus Game begins.
The game includes 4 fixed jackpot levels - Mini ($15), Minor ($30), Major ($100), and Grand ($1,000) - alongside a Buy Bonus option that grants direct entry into the Bonus Game at 75x or 200x stake.
Game Theme & Graphics
The visual theme follows classic casino conventions: diamonds, 777, bells, dice, and card suits on a dark, richly saturated background. The three Special Diamond counters above the reels - green, yellow, violet - are the dominant UI elements and the primary visual feedback system during base game play.
During the Bonus Game, respin counters, multiplier cell indicators, and Diamond value labels occupy the grid.
Hold and Win Bonus Mechanic
The Bonus Game triggers when Diamond symbols land on all 3 reels at the same time. Three respins begin immediately. Every new Diamond that lands resets the counter back to 3. Only Diamond symbols can appear during the Bonus Game.
Each Bonus Diamond displays a value of 1x, 2x, 3x, 4x, 5x, 6x, or 8x the stake. A Collect Diamond lands exclusively on Reel 2 and stays for the entire bonus. It accumulates the values of every Bonus Diamond on Reels 1 and 3. When the bonus ends, all accumulated values are summed and added to the Total Win.
Jackpot Diamonds can appear at random during the Bonus Game and pay their fixed value instantly: Mini ($15), Minor ($30), Major ($100), Grand ($1,000). The Bonus Game always plays through to completion, but the total payout is capped at 10,000x the stake.
Special Diamond Features
Each Special Diamond counter above the reels tracks diamonds of its own colour. The combination of Special Diamonds present when the Bonus Game triggers determines which features are active. Special Diamonds transform into Bonus Diamonds or the Collect Diamond at the start of the Bonus Game. Additional Special Diamonds landing during the Bonus Game become Bonus Diamonds and can activate their associated feature at that point.
Expand Feature (Green Diamond)
The green Special Diamond expands the grid from 3×3 to 3×5 for the entire Bonus Game. The extra two rows create 15 positions instead of 9, which means more Bonus Diamonds can occupy Reels 1 and 3 at any given time.
Multi Feature (Yellow Diamond)
The yellow Special Diamond places multiplier cells on random positions across Reels 1 and 3. Each multiplier starts at x2. If another multiplier lands on the same cell before a Diamond does, the value doubles: x2 → x4 → x8 → x16 → x32.
The multiplier applies to a Bonus Diamond's value at the moment the Diamond lands on that cell. Doubling only occurs when the multiplier symbol itself re-lands on the occupied cell.
Stepper Feature (Violet Diamond)
The violet Special Diamond activates Stepper mechanics: Bonus Diamonds do not disappear after landing. Instead, they shift down one position after each respin. The Collect Diamond on Reel 2 registers a Diamond's value each time it passes that Diamond's current cell.
When a Stepper Diamond lands on a multiplier cell as it moves, the multiplier applies to its value at that moment. If the respin counter reaches 0 while a Diamond is still on the reels, respins extend automatically until that Diamond exits. A new Diamond landing during this extension resets the counter to 3.
Extra Diamonds Feature
During the Main Game, any Diamond that lands can randomly activate the Extra Diamonds Feature. When it fires, the game adds enough Diamond symbols to the reels to meet the trigger threshold for the Bonus Game.
This feature provides a second entry path to the Bonus Game that does not depend on accumulating three separate Special Diamond colours across spins. One Diamond spin can be enough to unlock the bonus.
Symbols & Paytable
Diamond symbols have no standard line-pay values. Each type has a specific role in the Bonus Game mechanics.
Diamond symbols and their roles:
- Special Diamond (Green) - activates the Expand Feature (3x5 grid) in the Bonus Game
- Special Diamond (Yellow) - activates the Multi Feature (multiplier cells) in the Bonus Game
- Special Diamond (Violet) - activates the Stepper Feature (Diamond shifting) in the Bonus Game
- Collect Diamond - lands only on Reel 2, accumulates Bonus Diamond values throughout the bonus
- Bonus Diamond - shows a value of 1x-8x stake, lands only on Reels 1 and 3
Regular symbol payouts (3 matching symbols on one payline, at $1 stake):
| Symbol | Payout (3x) |
|---|---|
 |
$50.00 |
 |
$25.00 |
 |
$20.00 |
 |
$15.00 |
 |
$3.00 |
 |
$1.00 |
Wild (777) substitutes for all symbols except Diamonds. Paylines run left to right across consecutive symbols on 5 fixed lines. Only the highest win per line pays.
Buy Bonus
Two Buy Bonus options are available directly from the main game interface:
| Option | Cost | Description |
|---|---|---|
| Bonus Game | 75x stake | Includes 1, 2, or 3 randomly assigned Special Diamond Features |
| Super Bonus Game | 200x stake | All 3 Special Diamond Features guaranteed (Expand + Multi + Stepper) |
The Super Bonus Game at 200x guarantees the maximum configuration: the 3×5 Expand grid, x2-x32 Multi multiplier cells, and the Stepper mechanic active from the start. This is the only path where all three features interact in a single bonus round.
RTP of 3 Supercharged Diamonds
The RTP for 3 Supercharged Diamonds: Hold and Win was calculated across a simulation of 50 billion rounds and is 96,5%.
Volatility is medium-high. The 10,000x maximum win requires the Super Bonus Game with Stepper and Multi features both active, Bonus Diamonds passing through x32 multiplier cells multiple times, and a high-value Collect Diamond accumulating those totals. Bankroll planning should account for at least several Bonus Game triggers or a single Super Bonus purchase at 200x stake.
How to Play 3 Supercharged Diamonds
Find a Casino
Find an online casino that offers 3 Supercharged Diamonds: Hold and Win by Playson.
Register and Deposit
Register and deposit in USD.
Open the Slot
Open the slot from the casino lobby or search by name.
Set Your Bet
Set your bet and choose your play mode - manual spin or autoplay.
Watch the Special Diamonds
Watch the Special Diamonds above the reels - their combination determines the type of Bonus Game you enter.
How to Play on Mobile
3 Supercharged Diamonds: Hold and Win runs in mobile browsers on both iOS and Android without a separate app download. The game loads through any casino's mobile site or branded casino app via the in-app browser.
To find the game on mobile: open the casino app or mobile site, navigate to the slots section, and use the search or filter by provider (Playson). The game title appears as "3 Supercharged Diamonds" in most casino lobbies.
| Platform | Compatibility | Notes |
|---|---|---|
| iOS (Safari) | Supported | iOS 14+ recommended; runs in Safari and casino apps |
| Android (Chrome) | Supported | Android 9+ recommended; runs in Chrome and casino apps |
| Mobile Browser | Supported | Any modern browser with JavaScript enabled |
Why Slots Like 3 Supercharged Diamonds Still Draw Players
The classic diamond and fruit visual language connects directly with players familiar with Las Vegas-style video poker and traditional arcade slots. There is no learning curve on the base symbols.
The three-feature system - Expand, Multi, Stepper - creates 7 distinct bonus configurations (each feature alone, each pair, and all three together). Two players triggering the Bonus Game in the same session may enter completely different mechanical setups. The Super Bonus Game at 200x bypasses that variance and delivers all three features from the first respin.
About Playson
Playson was founded in 2012 and focuses on mathematically complex slot mechanics, particularly Hold and Win and Buy Bonus formats. The studio has built a consistent catalogue around respin-based bonus games, with titles including Coin Strike, Coin Strike 2, and the Energy Joker series.
Game Screenshots
FAQ
The Bonus Game triggers when Diamond symbols land on all 3 reels at the same time. Once triggered, you start with 3 respins, and the counter resets to 3 each time a new Diamond lands during the bonus.
The 75x Bonus Game randomly assigns 1, 2, or 3 Special Diamond features. The 200x Super Bonus Game guarantees all three features at once: Expand (3x5 grid), Multi (multiplier cells), and Stepper (Diamond movement). The Super Bonus Game is the only guaranteed path to the maximum configuration.
The Stepper Feature keeps Bonus Diamonds on the reels and shifts each one down one position per respin. The Collect Diamond on Reel 2 registers a Diamond's value each time it passes that Diamond's current cell position. A single Diamond can contribute its value multiple times before it exits the bottom of the reel.
When the Stepper Feature is active and the respin counter hits 0, respins continue automatically until all Stepper Diamonds have moved off the reels. If a new Diamond lands during those extended respins, the counter resets to 3 from that point.
Multi Feature places multiplier cells on Reels 1 and 3 at an initial value of x2. Each time another multiplier symbol lands on the same cell - before a Diamond does - the value doubles: x2 → x4 → x8 → x16 → x32. The multiplier applies to a Bonus Diamond when that Diamond lands on the cell.
The maximum win is 10,000x the stake. The Bonus Game always plays through to completion, but the final payout is capped at that limit. Reaching 10,000x requires the Super Bonus Game with high Bonus Diamond values, stacked x32 Multi multipliers, and the Stepper collecting the same Diamonds multiple times.
The Extra Diamonds Feature can fire randomly during the Main Game when any Diamond lands. The game adds enough Diamond symbols to the reels to meet the Bonus Game trigger threshold, and the bonus starts immediately. This is a separate entry path that does not require collecting three different Special Diamond colours manually across spins.