Knockout Diamonds: Slot Overview
The ELK Classic Series continues its legacy. Using the term 'rumble' is quite fitting here. In its 8th entry of the beloved retro-inspired titles, the developers dive into a boxing theme. The game resembles a physical slot machine cabinet positioned next to the ring, featuring a few modern additions. Although it’s styled with contemporary flair, the game is essentially a nod to classic gaming, which should excite enthusiasts of the series.
ELK Studios has mastered the art of blending vintage elements with contemporary design in their series. The slot's 3-reel grid is portrayed as though it were an actual machine, with scatter prize numbers laid out above visible symbol values. The gaming nostalgia is enhanced by having only one payline to claim rewards. Furthermore, sound and visuals excel, placing the player in a vibrant arena packed with an enthusiastic audience. ELK consistently delivers novel elements in their games, and the eighth installment in the series lives up to expectations.
Players have a variety of betting options ranging from 25 p/c up to €100 per spin , compatible with numerous devices. It's slightly disappointing that minimal bet options aren't available with the single payline setup, but perhaps that's left for another time. In terms of game mechanics, anticipate a wild ride due to the game’s high volatility , rated 8 out of 10. The frequency of hits is low, presenting a playful challenge, with the official hit frequency of 12.8% being fairly standard for such slots. Meanwhile, the game's RTP remains on average at 96% .
The nostalgic factor is clear when checking out the paytable, with symbols from the past such as cherries, single, double, and triple bars, bells, and lucky 7s being featured. The payouts are interesting too, with a full line of 7s granting 75x the player's stake . The wild symbol is even more lucrative, offering 100x the bet when it completes a line of three, but most frequently it substitutes for standard symbols to create wins.
Knockout Diamonds: Slot Features

Excitement builds with Knockout Diamonds thanks to a roster of features like Ringside Rumble, Multiplier Wilds, and Knockout Spins.
Ringside Rumble is triggered if identical symbols appear on the first two reels. When this occurs, these reels lock and the third reel spins three times, aiming to match the necessary third symbol or a wild, forming winning combinations.
Another feature in this game is Multiplier Wilds . At times, wilds appear to multiply the payout of a line win by either x2 or x3.
The standout feature in Knockout Diamonds is Knockout Spins . When three bonus symbols line up, the bonus round begins with 3 free spins. Every win or bonus symbol appearing on the line resets the free spins count to 3. During this round, bonus symbols are collected , and players receive payouts at the end based on the collection as per the Knockout Spins table displayed at the cabinet's top. Gathering 3 to 10 scatters awards payouts ranging from 5 to 2,500 times the initial bet. Alternatively, achieving a 2,500x jackpot is possible if 3 scatters land in a single spin.
Knockout Diamonds: Slot Verdict
Knockout Diamonds provides solid entertainment value with a retro vibe, but it may not entirely satisfy hardcore boxing fans. Beyond boxing-themed visuals and feature names, the gameplay doesn't focus much on the sport. However, this is a minor detail rather than a major critique, as the game remains faithful to the Classic Series spirit, delivering elements the series is praised for.
Reaching an eighth installment signals ELK’s strong connection with their audience. Fans of ELK’s past works will likely appreciate Knockout Diamonds too. A unique appeal of this slot is its solitary payline, a rarity these days. It offers a simple contrast to the current trend of complex multi-payline slots. The goal here is to keep hitting the play button, aiming for Knockout Spins and possibly capturing a maximum 2,500x bet potential.
Although not exceptionally high, the potential rewards align well with its design and straightforward gameplay. Gamers who delight in innovative slots with colossal payouts might feel somewhat underwhelmed. For others, Knockout Diamonds offers another quality retro-style slot that’s sure to please casual players.
In Short
If the earlier entries in ELK's Classic Series have captivated you, then this single-payline gem should prove equally entertaining.
(1 = worst / 10 = best)