Delve into a chilling underworld in SixSixSix, a dark and demonic slot by Hacksaw Gaming, played on an expansive 6x6 grid that utilizes the Cluster Pays mechanic. The game features 'Infected' symbols which spread their demonic influence across adjacent symbols, leading to chain reactions and larger clusters. Landing three or more scatter symbols unlocks the Free Spins bonus, where the spread of Infected symbols intensifies, significantly increasing the potential for massive wins. This high-volatility title offers a grim aesthetic and intense gameplay, promising diabolical payouts up to 6,666x your bet.