Grimoire of the Deep

About this Slot

Grimoire of the Deep is an action and adventure fantasy slot by 4phantom with an RTP of 96.02%, high volatility, and a maximum win of 25,000x. The game uses a 7x7 grid with cluster pays, where wins form when five or more matching symbols connect horizontally or vertically, replacing traditional fixed paylines. Cascading reels drop new symbols into winning positions after each cluster win, potentially creating multiple consecutive wins from a single spin. Winning positions become active and build multipliers when they win again, starting at 2x and climbing to 1024x. In the base game, multipliers last for the current spin and its cascades. Land three or more Scatter symbols to trigger Free Spins. Three Scatters award 10 spins, four Scatters award 12 spins, five Scatters award 15 spins, six Scatters award 20 spins, and seven Scatters award 30 spins. Multipliers persist throughout the Free Spins round, and the feature can retrigger to add additional spins. Four bonus buy options provide direct access to bonus features. The ENHANCED option costs 3x your bet and plays like naturally triggered Free Spins. The POWER UP option costs 64x your bet and functions the same way. The Bonus option costs 100x your bet and awards 10 to 30 Free Spins based on Scatter count, with multiplier persistence and retriggers. The Super Bonus option costs 500x your bet and starts the round with all positions carrying x2 multipliers, which then double normally during play, creating stronger early momentum than standard Free Spins.