Worm King Slot

94.18% RTP
3.4/5 (90 votes)
Worm King
No demo available
RTP 94.18%
Min Bet £0.10
Max Bet £100.00
Max Win 1,000x
Paylines Cluster Pays
RTP Distribution How Worm King compares to all slots we review
90% 93% 96% 99%

Play Worm King for Real Money

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Worm King Slot Features

Cluster Mechanic
Match five or more identical symbols in touching clusters on a 7×7 grid, with payouts scaling dramatically from 5x up to 500x based on cluster size.
Feature Inventory System
Fill a progress meter with each winning symbol to unlock fruit bomb, berserker, call to arms, or the ultimate worm king feature at predefined thresholds (25, 50, 75, and 100 symbols).
Worm King Super Wild
The worm king transforms into a 3×3 super wild, then splits into two 2×2 wilds, then eight single wilds to cascade wins across the grid.
Super Fruit Multipliers
When fruits form a 2×2 square, they merge into a super fruit with a 2x-5x multiplier for enhanced payouts.
Random Wild Substitution
The worm king randomly replaces up to nine symbols with wilds to trigger instant wins during regular spins.

Our Worm King Slot Review

Worm King is a high-volatility cluster slot that rewards patience with massive payouts—the 1,000x max win and scaling cluster rewards (up to 500x on wild apples alone) make it compelling for thrill-seekers, but the 94.18% RTP and infrequent large wins mean casual players should avoid it. The feature inventory mechanic adding progressive bonuses keeps the action engaging, though the 2010 design feels dated compared to modern releases.

Best for: High Risk Thrill Seekers Jackpot Chasers
Dan Thompson
Dan Thompson
Slot Analyst

A UK-based online slots analyst with over 15 years in the iGaming industry. Specialising in RTP analysis, volatility profiling, and bonus mechanic breakdowns across all major UKGC-licensed platforms. Known for delivering honest, data-driven reviews that help players make informed choices.

Last updated: 21 February 2026