The world of online slots continues to evolve, moving beyond traditional setups to offer players immersive, streamlined, and often unexpected experiences. Gamzix’s Only Coins, released on April 23, 2025, is a perfect example of this direction.

This slot ditches conventional symbols, paylines, and bonus features in favor of a focused, feature-heavy gameplay centered entirely around one mechanic: the Bonus Game.

Slick, luxurious, and delightfully simple, Only Coins manages to feel both classic and futuristic. Let’s take a deep dive into what makes this 3x3 slot stand out and why it could be the next big hit among fans of stripped-down, high-potential slots.

Only Coins Overview

Only Coins isn’t interested in complex storylines or cartoon characters. It’s all about aesthetic elegance and an atmosphere reminiscent of Las Vegas nightlife. The backdrop evokes neon-lit cityscapes and high-roller casino lounges. You’ll see golden coins, velvet blues, and crisp animations that never overstay their welcome.

The visuals are sleek, with a minimalist 3x3 layout and rich, clean artwork. Every symbol on the screen feels purposeful and polished. There's a deliberate focus on the idea of wealth—coins, jackpots, and shining frames—making every spin feel like it belongs in a VIP room. The sound design complements the atmosphere with soft electronic tones and a pleasant rhythm that adds to the immersion without becoming overwhelming.

Slot Structure and Gameplay

Only Coins is a 3-reel, 3-row slot game with no paylines and no standard symbol payouts in the base game. That’s right—there are no cherries, sevens, bars, or even wilds. The only way to win is through the Bonus Game, where things get exciting.

Rather than cluttering the screen with unnecessary visual noise or dozens of minor features, the game’s entire focus is on the Bonus Game mechanic, which delivers a satisfying and engaging core loop.

Only Coins Symbols and Their Functions

Even without classic symbols, Only Coins offers plenty of variety. All of the following appear exclusively during the Bonus Game (though some can land in the base game as setup):

• Prize Coins: each displays a value between 1x and 9x your bet.
• Jackpot Symbols: fixed rewards of 10x, 20x, or 50x your stake.
• Sticky Mystery Symbols : lock in place until the end of the Bonus Game, then reveal a reward or a jackpot.
• Mystery Jackpot Symbols: instantly grant a random jackpot when they land.
• Collect Symbols: sweep up all coin and bonus values on screen.
• Walking Multiplier Frame: a dynamic multiplier that doubles the prize it lands on—or even the total Collect payout.

The Bonus Game and other features

Triggering the Bonus Game is the primary goal in Only Coins. It can happen in two ways:

• By landing three Bonus symbols on an active row during the base game.
• Via the Heap of Coins feature, which randomly fills the board with enough Bonus symbols to activate the mode.

Once triggered, the Bonus Game awards 3 respins. Each time a new special symbol lands, the counter resets to 3. This “hold and spin” mechanic turns each spin into a suspenseful moment—especially when the grid starts to fill up.

During this feature, all the action takes place. Coin values add up. Jackpots trigger. Multipliers boost totals. Sticky symbols await their big reveal. It’s fast-paced, streamlined, and surprisingly strategic.

Among the most exciting mechanics in Only Coins is the Walking Multiplier. This is a mobile frame that moves across the reels during the Bonus Game.

If it lands on a Prize Coin, Jackpot, or Sticky Mystery symbol, it doubles the value. If it lands on a Collect symbol in the same round, things get even crazier: the Collect symbol grabs all visible rewards, and then the Walking Multiplier doubles the full amount.

This mechanic offers some of the most explosive win potential in the game. Watching the frame crawl across the reels while hoping it hits just the right target adds a ton of tension and satisfaction.

The Sticky Mystery symbols are a brilliant addition. Once they appear, they stay locked until the Bonus Game ends. Then they reveal a reward ranging from a coin payout (1x to 9x) to one of the Jackpots. This creates an engaging end-of-round climax, where your final win can skyrocket unexpectedly.

Mystery Jackpot symbols, on the other hand, deliver instant jackpot prizes when they land, injecting bursts of adrenaline mid-feature.

Jackpot System and Maximum Win

Only Coins comes with four fixed Jackpots:

• Mini Jackpot – 10x your bet
• Minor Jackpot – 20x your bet
• Major Jackpot – 50x your bet
• Grand Jackpot – 500x your total bet

The Grand Jackpot is awarded if you manage to fill all 9 positions with Bonus symbols during the Bonus Game.

The game’s total win cap is 2,000x your bet, which is attainable when multipliers and jackpots align in a particularly lucky round​.

Heap of Coins and Buy Bonus

To make the Bonus Game more accessible, Gamzix introduces two additional features.

Heap of Coins can randomly activate when a Bonus symbol lands on an active row. The game will then automatically add enough Bonus symbols to trigger the Bonus Game, making each spin in the base game feel meaningful.

For impatient players, the Buy Bonus feature lets you skip the wait entirely. At the cost of 30x your bet, you’ll get one guaranteed base game spin that immediately activates the Bonus Game.

RTP and Volatility

Only Coins offers a default RTP of 96%, though versions with 92%, 94%, and 95% RTP may also be offered depending on the casino. The game features medium volatility, meaning players can expect a balanced rhythm of wins—enough small hits to keep things exciting, with the occasional big reward to chase.

Mobile Compatibility and Localization

As a modern release, Only Coins is fully optimized for mobile, tablet, and desktop play. The interface is smooth and responsive on all screen sizes. Gamzix also provides support for 18 different localizations, and the game is compatible with all major currencies, including cryptocurrencies where supported.

Whether you’re playing on a desktop browser or spinning on your phone, the experience is equally polished.

Conclusion

Only Coins isn’t trying to be everything to everyone—it’s designed with a clear vision and sticks to it. If you’re looking for a slot packed with expanding wilds, mini-games, and ten different bonus rounds, this isn’t the game for you.

But if you want a slot that delivers excitement through smart mechanics, focused gameplay, and a clean presentation, Only Coins might just be your new favorite.

The hold-and-win Bonus Game is where the real thrill lies, and with multiple symbol types, multipliers, and jackpots, it stays engaging far beyond your first few sessions. The addition of the Walking Multiplier and Collect features creates meaningful decision-making and keeps you invested in every spin.

Ultimately, this is a premium slot for players who like sleek games with potent features and no unnecessary clutter.