Early Access Launch on Steam on February 17:“Ritual Party,” Featuring Music by Our CEO Hideyuki Shima
Ritual Party is a chaotic cooperative party horror game for 1–4 players, inspired by the Cthulhu Mythos, in which players work together to perform occult rituals and summon ancient gods. As the rituals spiral out of control, players must deal with unexpected supernatural events, suspicious neighbors, police interference, and increasingly intense pressure within a limited space.
The music for Ritual Party was composed by our CEO, Hideyuki Shima, a Finland-based composer. Drawing on his experience across animation, drama, and interactive media, he crafted a soundtrack tailored specifically to the game’s world. Ranging from 1920s-style retro jazz to more modern and experimental sounds, the music shifts from stage to stage, enhancing both the tension and the dark humor of the rituals as they descend into chaos.
Ritual Party is developed by Finnish indie game studio Hologram Monster. Throughout the Early Access period, the game will continue to evolve with ongoing updates, including new content and gameplay refinements based on player feedback.
As a company, we are pleased to be involved in an international game project like Ritual Party, and we look forward to seeing how the game grows following its Early Access launch.

