Combat as a Puzzle — Official Intro to Slayer: the Demon Haunted World

November 2025, Republic of Korea — Play Mephistowaltz announces Slayer: the Demon Haunted World, an action RPG focused on strategic, mastery-driven combat and tense spatial design. Players control Elia, who wields the “last spark” of a dying world while battling through varied stages and bosses to uncover an impending apocalypse. The game launched on July 25, 2025 on Steam.