Sea of Riches

Isoftbet sends its first cluster-pay grid slot out to open water with Sea of Riches, a pirate-themed release built around a 6x6 grid rather than the reels-and-paylines format the studio usually favors. The splash screen sets the scene with a palm-lined coastline, a shark-shaped cave hinting at danger, and a moving backdrop of waves and wind-driven clouds, while a gravel-voiced pirate captain and an upbeat soundtrack carry the presentation. Bets run from 0.20 up to 200 per spin, and volatility is pitched at medium.

Wins form when five or more matching symbols connect horizontally or vertically anywhere on the grid; each winning cluster is cleared and the empty spaces refill as symbols tumble down, with the process repeating for as long as new clusters keep appearing. Coin symbols make up the lower end of the paytable and gems the upper, with the biggest clusters of fifteen or more matching symbols paying between 3.75x and 150x the total stake. A tentacle-wrapped wild fills in for any paying symbol to help complete a cluster.

Sea of Riches layers two systems on top of the base cluster mechanic. Bottle symbols carry pieces of a treasure map, and collecting twenty-five of them advances the player through one of four levels before looping back to the first. Each level carries its own randomly triggered modifier that can fire on a losing spin: a kraken can turn five to ten symbols wild, a storm can turn three to nine symbols wild, a whale's tail can stamp a five-wild pattern across the grid, or a ghost ship can add two to five wild multipliers to the reels.

Separately, every winning cluster charges a compass meter that unlocks its own set of reel-altering effects — rolling barrels that transform three to six symbols into a single matching symbol, gunshots that clear five to twelve symbols to spark a new cascade, cannonballs that wipe out a full row, and a flock of parrots that removes ten to fifteen symbols before the reels tumble again. Once the compass has been charged by forty-eight or more winning symbols, it awards between five and fifteen free spins, during which lightning can strike the meter up to three times per winning spin to attach a multiplier that resets before the next spin.

The game carries a 96% RTP and a maximum win of 2,416x the stake, a ceiling well below many rivals in the cluster-pay category despite how many systems are layered into the base game and free spins.