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Knockout Diamonds

Review, Demo Play, Payout, Free Spins & Bonuses

Knockout Diamonds is a 3-reel, single payline online slot developed by ELK Studios. Features include multiplier wilds, respins, free spins and collection bonuses. The RTP of this high v...olatility slot is 96% and its top prize is worth 2500x your stake.

Knockout Diamonds is a 3-reel, single payline online slot developed by ELK Studios. Features include multiplier wilds, respins, free spins and collection bonuses. The RTP of this high v olatility slot is 96% and its top prize is worth 2500x your stake.
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Pros
  • Fun base game bonuses
  • Great free spins feature
Cons
  • Just 1 payline
  • 2500x prize a bit low

Introduction

ELK Studios adds to its Classic Series with its Knockout Diamonds slot. It’s a traditional game with a wide range of features, including respins, free spins and a collection bonus – which all combine to create an exciting and engaging online gaming experience.

Theme and Graphics

Knockout Diamonds from ELK Studios features an exciting boxing theme, with a set of reels that is set ringside. The bright lights of the sports arena shine down on the game while the reels themselves are created in an old-school slot machine style.

While ELK Studios normally creates games with very out-there themes and crazy graphics, this game is a lot more scaled back. However, that’s not a bad thing. Knockout Diamonds looks fantastic and there are some great features here, as well.

Knockout Diamonds

How to Play

It’s easy to get started playing Knockout Diamonds:

  1. Once the game loads, click on the menu in the upper left-hand corner. Here, you can view the paytable and adjust setting.
  2. Pick a bet size. You can wager between .25 coins and 100 coin per spin.
  3. Decide if you’d like to use the Autoplay feature. Unlike most ELK slots, this game doesn’t have built-in betting strategies.
  4. Hit the spin button!

Knockout Diamonds RTP and Variance

The RTP (return to player) of Knockout Diamonds 96%. It’s also a high variance slot, so the 2500x top prize is just a little bit disappointing when you consider that most highly volatile games nowadays have top prize of 5000x and above.

How to Win

Since there is a 3-reel, 1-payline slot, all you have to do is land three matching symbols on the main payline. The wild is the most generous symbol in the game, awarding a prize of 100x for a 3-of-a-kind combination.

Max-win 2,500x
Volatility High
Top RTP 96%

Base Game Features

There are two base game features that you can trigger throughout Knockout Diamonds:

Ringside Rumble

When two identical sets of symbols appear on the first two reels, you’ll trigger this bonus. The first two reels are locked while the third awards 3 respins.

Multiplier Wilds

Throughout the base game, you may encounter multiplier wilds. They will multiplier your win by either 3x or 2x.

Knockout Spins Bonus

When you land three bonus symbols on the payline, you’ll trigger the Knockout Spins bonus where you’ll get 3 free spins. Throughout the round, you collect bonus symbols and each time you collect one, the free spins counter resets to 3.

By collecting 10 bonus symbols, you’ll trigger the top prize of 2500x. The rest of the bonus payouts range from 5x to 500x.

Knockout Diamonds Review

Knockout Diamonds is a great addition to ELK Studios’ Classic Series, joining games like Diablo Reels and Hit It Big. We do enjoy ELK’s more modern slots, but the developer has taken care to ensure that its more traditional-style games are still engaging.

In Knockout Diamonds, the free spins round is where the big wins occur – but, you can still look forward to decent winning potential in the base game. The multiplier wilds and respins bonus both offer the chance to win nice payouts as you spin the reels.

The free spins round in this slot isn’t your traditional free spins bonus, as it’s more about collecting symbols rather than generating wins. This is a fun round, and the collection of bonus symbols means you’re likely to walk away with a good bonus off at least 5x your stake.

The slots in ELK’s Classic Series are all very traditional but have their unique quirks that allow players to really get stuck in. Knockout Diamonds is no exception, and we can see why this slot would be a big hit among players.

Slot Data
Slot Name: Knockout Diamonds
Software: ELK Studios
RTP: 96%
Volatility: High volatility
Paylines: 1
Reels: 3
Min Bet (all lines covered): £0.25 (GBP)
Max Bet: £100 (GBP)
Top Win: 2500
Features: Wild Symbol, Scatter Symbol, Free Spins, Respins, High volatility, 3 Reels, Symbol Collection, Wild Multipliers
Themes:
Last Update: 29/06/2026
UK Available in UK? Yes. ELK Studios have a UKGC license and are allowed to offer their games at UK licensed casinos.

Knockout Diamonds Slot FAQs

What is the RTP of Knockout Diamonds?

Knockout Diamonds has a payout percentage of 96%.

What is the biggest win available on Knockout Diamonds?

The top win you can land while playing Knockout Diamonds is worth 2500x your stake. You can do this by collecting 10 bonus symbols during the free spins round.

How volatile is Knockout Diamonds?

Knockout Diamonds is a more high volatility online slot, so the 2500x is not super generous.

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