Kadath Announces Under Mythos JRPG For PC And Switch In 2028
Kadath's stated goal is to restore Japan-originated JRPGs and original IP, and its producer frames the project as an indie-minded effort to court fans from the planning stage.
Key Facts
- Kadath Co., Ltd. announced on September 10 the dark fantasy JRPG Under Mythos, planned for release in 2028 on PC via Steam and Nintendo Switch.
- Kadath was founded in January 2026 by producer Yoichi Miyaji, and Under Mythos is the studio's first project.
- Character design for Under Mythos is by Atsuko Nishida, scenario is by Takumi Miyajima, and music is by Noriyuki Iwadare.
- The Under Mythos game system combines hot spring inn management simulation with dungeon extraction, with action battles against grotesque transformed beings.
- Kadath aims to reach the stage before a vertical slice prototype by February 2027, with test play planned for 2027.
Reporting from 3 sources: Denfaminicogamer, Automaton, Game Spark.
Kadath Co., Ltd. announced on September 10 the dark fantasy JRPG Under Mythos, planned for release in 2028 on PC via Steam and Nintendo Switch. The studio was founded in January 2026 by producer Yoichi Miyaji, whose credits include the LUNAR and GRANDIA series, and Under Mythos is its first project. The protagonist is a single cat that wanders into another world while searching for its Mother, arrives at a mysterious hot spring inn where otherworld residents soak, and works there entertaining guests while wishing to reunite with Mother. The game system combines hot spring inn management simulation with extraction: players explore dungeons for ingredients and resources, fight action battles against grotesque transformed beings, and return safely to put the ingredients and rewards back into running the inn. Developing the inn produces new encounters and experiences that lead back to exploration. The familiar world gradually mutates into an unpredictable madness as the story progresses.
Character design is by Atsuko Nishida, who designed Pokemon including Pikachu and Charmander. She said the cat lead came from her own reading of the Cthulhu Mythos figure Nyarlathotep: "I interpreted the Cthulhu Mythos' 'Nyarlathotep' in my own way, and this child was born! Although it is a god of chaos, I would be happy if it becomes a beloved presence like a familiar kitty."
Scenario is by Takumi Miyajima, whose credits include Tales of the Abyss, and music is by Noriyuki Iwadare, known for GRANDIA, LUNAR and Ace Attorney. Iwadare said he built the score around the protagonist's sudden transformation, moving from a slightly Japanese-style melody into high-speed jazz.
Development is handled with support from Matrix, Liz, Cosmo Machia, and Taiwan's iSWEETY. Kadath says it is preparing a vertical slice at the quality level of the finished game and is recruiting collaboration partners for the prototype. A milestone of February 2027 is set for the stage before the vertical slice, with open test play and a Discord channel planned. Media previews and a producer interview are planned around Tokyo Game Show 2026.
Synthesized by Yomimono from the 3 cited sources below, including Japanese-language reporting where cited, then editorially reviewed before publishing.