Grubstake

Grubstake is a fantasy, magic, mining and gems themed slot by SuperGaming with an RTP of 94.5%, high volatility and a maximum win of 20,000x. The game uses a 7×7 grid with Cluster Pays mechanics, where five or more connected symbols form a winning cluster.

Cascading Reels remove winning clusters and drop new symbols into their place, keeping a single spin active across multiple tumbles. This feature can generate consecutive wins without requiring a new bet.

The Wild Symbol substitutes for all paying symbols except Scatter, helping to complete clusters. Wilds can carry multipliers that apply to the cluster win they help form, adding value during both the base game and bonus rounds.

Four or more Scatter symbols trigger Free Spins, with the number of spins awarded based on scatter count. The award ranges from 10 spins up to 20 spins. During Free Spins, each grid position builds a growing multiplier as winning clusters form on it. Three or more Scatters landing during Free Spins retrigger the feature and add additional spins.

Grubstake offers five Bonus Buy options for direct access to Free Spins at different price points. Golden Touch costs 1.2x your bet, Gold Rush costs 5x your bet, Epic Avalanche costs 25x your bet, Treasure Fall costs 100x your bet, and Legendary Drop costs 200x your bet.