Mermaid's Diamond Slot by Play'n GO

Free demo, RTP, volatility and bonus features of the Mermaid's Diamond slot by Play'n GO.

Full Review

Game Information

Dive into an underwater world in Mermaid's Diamond. This 720-way slot features a unique hexagon grid, where diamonds and mystical sea creatures can lead to sparkling treasures beneath the waves.

Mermaid's Diamond is an online slot from Play'n GO. Play'n GO develops a broad portfolio of online casino games, including celebrated slots, table games and bingo titles, with mobile-first demos and distinctive recurring series. CasinoCheck hosts the title as a browser-based demo, so you can inspect the controls, presentation and feature flow without creating a casino account or staking real money. The free-play version is particularly useful for checking whether the pace and interface suit you before considering any real-money version.

The catalogue entry records an RTP of 96.5%, medium volatility and a stated maximum win of 5000x. The recorded release date is September 19, 2017. RTP describes a long-term theoretical return rather than the result of an individual session. Volatility indicates how unevenly wins may be distributed, while the maximum-win figure describes a game limit, not an expected outcome.

Gameplay tags associated with Mermaid's Diamond include Free Spins, Wilds, Scatters, Ways. These labels provide a quick overview of the main systems to watch in the demo. The detailed rules below explain the currently recorded feature behaviour, while the in-game paytable remains the final reference for symbol values, trigger requirements and available options.

Use the demo to test several stake settings, follow how ordinary wins are formed and observe what happens when a bonus or special symbol appears. It is worth checking the information panel before the first round and again after changing any option. This makes it easier to distinguish regular gameplay from optional features and to understand how the displayed balance reacts over a longer sample of rounds.

Game configurations can vary by casino, jurisdiction or software version. Confirm the live RTP, limits and feature availability inside the version you intend to use. Demo results do not predict future real-money outcomes. Set a budget before playing, avoid chasing losses and treat casino games as entertainment rather than a way to earn money.

Game Rules

Mermaid's Diamond is a 5-reel slot with 720 ways to win in a 3-4-5-4-3 diamond shape. Trident Wilds can be randomly added to the reels on any spin. Land 5 Chest scatters to trigger Free Spins; if you land 4, the Divine Intervention feature may trigger to add the 5th. During Free Spins, collect diamonds to trigger Trident Wilds. Every 5 diamonds collected adds at least one Wild column. The feature can be retriggered by landing more scatters, with no set limit on the number of spins.

How to play the Mermaid's Diamond demo: open the game, wait for the interface to finish loading and review the paytable or help menu before starting. Choose a comfortable virtual stake with the on-screen controls, then begin a round and let the result complete before changing settings. The demo uses play credits, but the controls and feature sequence are designed to mirror the corresponding game experience.

For this slot format, set the virtual stake and press spin. Winning combinations are evaluated according to the paytable after the reels or grid settle. Check whether the game uses paylines, ways, clusters or another win system, because this determines how matching symbols connect. Wilds, scatters and bonus symbols may follow separate rules.

The mechanics recorded for this title are Free Spins, Wilds, Scatters, Ways. Feature labels summarise the catalogue entry, but the game screen determines the exact trigger, duration and payout calculation.

The technical profile lists 96.5% RTP, medium volatility and a maximum win of 5000x. RTP is calculated across a very large number of rounds and cannot forecast a short demo session. Volatility describes the intended risk pattern: higher settings generally mean outcomes may be less frequent and more uneven. A maximum win is a ceiling and should never be treated as a likely target.

During testing, watch the stake shown before every round, the balance change after settlement, the symbols or events that trigger features and any multiplier that remains active. Try the base game first instead of immediately selecting an optional shortcut. If autoplay is available, set a limited number of rounds and stop conditions so the session remains easy to follow.

Availability, RTP and feature settings may differ between operators or countries. Always use the paytable and help menu in the exact version being played. Real-money gambling involves financial risk; use fixed limits, take breaks and never increase a stake to recover a loss.

All Play'n GO slots and free demos

Related Slot Games