Ninon the Upside-Down Mermaid
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When does Ninon the Upside-Down Mermaid come out?
Ninon the Upside-Down Mermaid released on Apr 17, 2026 on Web browser, Linux, PC, Mac.
About
In the underwater kingdom of Cerebrite, there live several mermaid princesses. One of them is Ninon, who was born in a peculiar manner unlike the other merfolk: she had the head of a fish, and the legs of a human. As such, the other merfolk shun her, and she feels out of place amongst even her own family.
Meanwhile, Ninon herself carries a desire to see the world beyond her home of the White Sea, a desire that is granted in a most unorthodox fashion on the night of her 21st birthday, in the form of a chance encounter with a nobleman named Vivien Bellerose.
Screenshots
Release dates
| Platform / region | Date | Status |
|---|---|---|
| PC (Microsoft Windows) | Apr 17, 2026 | Confirmed |
| Web browser | Apr 17, 2026 | Confirmed |
| Mac | Apr 17, 2026 | Confirmed |
| Linux | Apr 17, 2026 | Confirmed |
Developer Atelier in Wonderland
