Demi Gods IV - Thunderstorm Slot — Value Score 78.7/100

Demi Gods IV - Thunderstorm by Spinomenal features a 6-reel grid with 20 paylines, where wins form by landing three or more matching symbols across the lines, including high-value icons like the Parthenon and demi gods alongside wild substitutions. The visual style draws from ancient Greek mythology, depicting stormy skies, thunder effects, and temple architecture on a mobile-optimized interface playable across devices. Gameplay includes random base game modifiers across three levels: win multipliers of 2x to 4x, synced reels (e.g., reels 3-4, 3-5, or 2-5 showing identical symbols), and Power Spins that remove low-paying symbols (10-A). Free spins trigger via bonus symbols on reels 1 and 6, awarding 10 spins plus a feature wheel selection, with retriggers adding spins and upgrades. A buy-feature option allows direct access to free spins. Conflicts exist in sources, with some describing a 5-line 'Book Of' variant with expanding symbols and up to 10,000x wins at variable RTPs (88.92%-96.18%), while others confirm 20 paylines and 5,706x max win; the core Thunderstorm version emphasizes progressive features over traditional book mechanics. This installment stands out through its leveling system that enhances modifiers during free spins, combining medium volatility with thematic immersion for sustained engagement.