- Publisher: 8-4
- Release Date: Jun 5, 2025
- Also On: Nintendo Switch 2, PC, Switch
- Summary: Dive into the parallel story to UNDERTALE! Fight or spare your way through action-packed battles as you explore a mysterious world alongside an endearing cast of new and familiar characters. Chapters 1-4 will be available on launch, with more planned as free updates!
- Developer: tobyfox
- Genre(s): Role-Playing, Japanese-Style
- Cheats: On GameFAQs
- More Details and Credits »
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