| App Type | game |
| Release Date | Dec 18, 2025 |
| Details Last Modified | June 30, 2026 (4 months ago) |
| Developer | feng |
| Publisher | Sekai Project |
| Genres | Adventure, Casual |
| Supported Systems |
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| Price | $19.99 |
| Required Age | 0+ |
| Packages | 1 |
| Support | support.sekaiproject.com |
The Mermaid Festival is an annual festival that takes place in the coastal town of Suminoe and on the night of the festival, Takumi meets a girl with a beautiful singing voice. From this chance encounter, Takumi's daily life slowly begins to change. The 7th project by developer, feng.
Family Sharing
Single-player
Steam Cloud