15 Coins™ Grand Diamond Edition Slot

15 Coins™ Grand Diamond Edition Slot RTP, Details & Wager Limits

The 15 Coins™ Grand Diamond Edition slot plays out on a 5×3 grid. If you’re familiar with Wazdan’s Coins™ series, you already know that there are no traditional paylines and paying symbols here. In fact, unlike in traditional online slots, all winnings come in the bonus round.

You can wager between 10p and £1,000 per spin—you won’t find many new online slots with such accommodating bet levels. Use the + and – buttons to adjust your stakes, but remember that it tops out at £5 per spin in the UK.

Playing at non-UK 15 Coins™ Grand Diamond Edition casinos gives you access to the autoplay function. You can also increase the pace of spins with the fast and ultra-fast modes.

The 15 Coins™ Grand Diamond Edition RTP is 96.15%, a touch above the average mark. I didn’t come across other RTP variants while researching for my review, so you don’t need to trawl various UK online casinos for the highest return value as I’d typically recommend.

As usual with this provider, you can customise your gameplay by adjusting the variance levels, selecting between low, standard, or high volatility. Moreover, the 15 Coins™ Grand Diamond Edition max win of 5,000x is decent—one of the highest in the Coins™ franchise. However, if you’re chasing life-changing payouts, try progressive slots instead.

15 Coins™ Grand Diamond Edition Theme—Hunt for Gold, and You Might Find a Diamond

Having played a number of the titles in the series, I didn’t have high expectations from the visuals when I loaded up the 15 Coins™ Grand Diamond Edition demo. Still, I was rather impressed. Everything in the game looks polished and sharp.

The shimmering gold coins are the main attraction on the reels—bold and easy on the eyes. However, the overall look would have dazzled more if we had gotten a clearer depiction of the piles of diamonds in the background. On the other hand, we’ve seen worse in the prequels, so I can’t complain too much.

A relaxing tune plays as you spin the reels, contributing positively to the mood. It remained soothing all through my playtest and didn’t feel repetitive.

As I have pointed out earlier, this title doesn’t have traditional paying symbols.

15 Coins™ Grand Diamond Edition Mobile Slot

The 15 Coins™ Grand Diamond Edition slot holds up well on smartphones and tablets. Even though the gameplay is quite unusual, it doesn’t look out of place on smaller screens.

Unlike what we’ve come to expect from some free slots, the layout doesn’t feel cramped in portrait mode. If you’re looking to replicate the desktop view at mobile casinos, you can switch to landscape mode at any time.

15 Coins™ Grand Diamond Edition Bonus Features

The Hold and Win bonus round is the beating heart of the 15 Coins™ Grand Diamond Edition slot. It awards fixed jackpots, multipliers, and mystery symbols. However, you won’t find free spins here as you might expect from the best slots online.

Hold The Jackpot™ Bonus Game

Landing 5 or more bonus symbols on the reels triggers the Hold the Jackpot™ bonus game. The round starts with 3 respins, and each bonus symbol that appears is locked in position and resets the spin counter.

These bonus symbols are:

• Jackpot Symbols: Mini (10x the bet), Minor (20x the bet), Major (50x the bet).
• Cash Symbol: Awards prizes between 1x and 10x the bet.
• Cash Infinity™ Symbol: Awards prizes ranging between 5x and 15x the bet. If it lands in the middle reel during the base game, it increases the chances of triggering the bonus round.
• Collector Symbol: Collects prizes of Cash and Cash Infinity™ symbols in view, applying a multiplier value between 1x and 20x to their sum.
• Mystery Symbol: It reveals any other bonus symbol except the Cash Infinity™ symbol.
• Jackpot Mystery Symbol: Reveals only Jackpot symbols.

The round ends when you use up the awarded respins or when you fill up the reels with bonus symbols. If the latter is the case, you’ll instantly unlock the 5,000x the bet Grand jackpot. Note that the bonus prizes aren’t added to the jackpot prize.

Cash Out

The Cash Out frame can appear randomly on any position in the base game and will remain sticky for 20 spins. If you’re lucky enough to land any of the bonus symbols in the frame, their values will be collected.

When the frame counter reaches 0, it displays a dynamic multiplier value in percentage of up to 300%. This value is then applied to the sum of the collected prizes. Basically, this is the only way to create a win in the base game.

Chance Level™ (Unavailable in the UK)

This is Wazdan’s Ante Bet equivalent, and it comes with 3 options:

• Chance Level™ x2 (2x the bet): increases your chances of triggering the bonus round by 2x.
• Chance Level ™ x5 (5x the bet): increases your chances of triggering the bonus round by 6x.
• Chance Level ™ x10 (10x the bet): increases your chances of triggering the bonus round by 13x.

Bonus Buy (Unavailable in the UK)

Jump into the Hold the Jackpot™ bonus game directly from the base game by activating the Bonus Buy option. Here are the available choices:

• Low (50x the bet): triggers the bonus round with 4 Cash symbols and 1 Cash Infinity™ symbol.
• Standard (100x the bet): triggers the bonus round with 3 Cash symbols, 1 Cash Infinity™ symbol, and 1 Mystery symbol.
• High (300x the bet): triggers the bonus round with 3 Cash symbols, 2 Cash Infinity™ symbols, and 1 Jackpot symbol.
• Extreme (600x the bet): triggers the bonus round with 5 Cash Infinity symbols, 1 Mystery and Jackpot Mystery symbols.
• Double Extreme (900x the bet): triggers the bonus round with 5 Cash Infinity symbols, 2 Mystery symbols, and 1 Jackpot Mystery symbol.

15 Coins™ Grand Diamond Edition Verdict: A Rehash of the Previous Games

2.7/5

Based on our expert’s review. Reviewed by Olamidotun Otis

Olamidotun Otis

Play 15 Coins™ Grand Diamond Edition

15 Coins™ Grand Diamond Edition Slot

The 15 Coins™ Grand Diamond Edition slot game is a rehash of what we’ve seen several times already from this provider. So, if you’re looking for a fresh experience on the reels, you might want to look elsewhere.

Pros

• Visuals look sharp and polished
• £1,000 max bet
• Offers multipliers on the collector symbol

Cons

• Bonus features are limited
• Doesn't stand out from the other titles in the series
• No free spins
• Base game lacks excitement

The gameplay in the 15 Coins™ Grand Diamond Edition slot game doesn’t break away from what we’ve seen in other Coins™ titles. To put everything into perspective, take 20 Gold Coins™ Grand Gold Edition and swap in a top reward of 5,000x the bet, and you’ve got something very close to 15 Coins™ Grand Diamond Edition. It’s that simple—don’t expect anything particularly new or groundbreaking here.

The idea of not having paying symbols never sits right with me. Why should I wait until the bonus round (or 20 spins in the Cash Out feature) for any hope of a payout? Some might argue that the modifiers awarded in the round are worth waiting for—not in my books, though.

On the upside, I noted improvements in the visuals. Although the design sticks to the usual formula, it all looks polished and sharp. I couldn’t take my eyes off the shimmering gold coins on the reels, but you have to decide for yourself if that is this title’s main redeeming quality.