Sails of Fortune Slot by Relax Gaming

The base game is built around one trick: a roaming parchment-map mystery symbol that drops in, locks position, and kicks off a respin. While that mystery sits on the grid, respins keep firing - and each fresh respin can land another mystery, which extends the sequence. When the respins finally stop, every mystery flips to reveal the same paying symbol. It's the engine that holds the base game together, because without it you're staring at 243 ways and weathered card pips carved into the wooden hull of a Caribbean galleon. Hit rate sits around 1-in-4, so feature triggers come often enough to keep the wait bearable.

Three or more treasure-chest scatters open Treasure Hunt Free Spins, and this is where the math actually moves. The bonus opens on the standard 5x3, but each extra chest you collect during the round physically grows the reels - one row at a time. The grid stretches to 5x4 (1,024 ways), then 5x5 (7,776 ways), and the mystery symbol gets an upgrade too: it can now expand to cover multiple positions before revealing. Stacking a fully grown grid with an expanded mystery on a high-pay symbol is how the 25,000x ceiling actually gets reached. Without that progression, the bonus is just a slightly bigger version of the base game.

Visually it's a sunset-over-tropical-water setup - turquoise waves, pink-orange sky, distant volcanic island - with the reels mounted into the carved deck of a sailing ship, ropes and rigging draped along the sides. Pirate captain, parrot and ship cover the high pays; barrel-carved royals fill the low end. Standard pirate iconography, well executed.

The Buy Bonus sits at 70x stake and drops you straight into the free spins trigger. Worth knowing: the buy doesn't pre-collect chests, so you still need the bonus itself to grow the grid. You're paying for the entry, not for a guaranteed maxed 5x5. A 2022 release from Relax Gaming that lives or dies on whether the bonus chests cooperate.