Diamond Mystery Smoking Hot 7's Demo Slot by Greentube Free Play

Diamond Mystery Smoking Hot 7's is an online Slot from Greentube.

Quick Facts

- Layout: 5 reels x 3 rows

- Paylines: 5 fixed

- Key mechanics: Jackpot Diamonds feature, Scatter pays, Gamble feature

- Special symbols: Red Seven (Highest value), Star Scatter

How the Game Plays

Diamond Mystery Smoking Hot 7's, developed by Greentube, is a retro-inspired fruit slot that merges traditional gameplay with modern jackpot opportunities. Played on a 5x3 grid with 5 fixed paylines, the game centers on landing matching fruit symbols from left to right across the reels. The symbol set features high-definition classic icons, including watermelons, grapes, plums, lemons, oranges, and cherries. The Red Seven is the game's premium symbol, offering the largest standard payouts. A gold Star serves as the scatter symbol, which rewards players with a win when three or more appear anywhere on the reels, regardless of their position on the active paylines.

Jackpot Diamonds Feature Explained

The most significant addition to this classic setup is the Jackpot Diamonds feature. This mystery bonus can trigger at random on any non-winning spin during base play. Once activated, it leads to a dedicated screen containing 12 face-down cards. Players select cards to reveal hidden gemstones, with the goal of matching three of the same type. This guarantees a win of one of four progressive jackpot levels: Green (Level 1), Blue (Level 2), Red (Level 3), or the top-tier Diamond (Level 4), the latter of which can award up to 5000x the total stake.

Gamble Feature Explained

Like many classic titles from the Novomatic and Greentube portfolio, this slot includes a traditional gamble option. Following any winning combination, players can choose to enter a double-or-nothing mini-game. By correctly guessing the color of a hidden card (Red or Black), the current win is doubled. This process can be repeated several times in succession, but a single incorrect guess results in the forfeiture of all accumulated winnings from that specific round.

Click the Play for Free button to load the Diamond Mystery Smoking Hot 7's demo, test its features and payouts and decide if it is a game you enjoy.