Ninon the Upside-Down Mermaid
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…
Ninon the Upside-Down Mermaid is an indie developed by Atelier in Wonderland, released 17 April 2026 on Linux, Mac, PC (Microsoft Windows) and Web browser.
What Ninon the Upside-Down Mermaid is
Ninon the Upside-Down Mermaid is an indie game developed by Atelier in Wonderland and released in 2026. It is available on Linux, Mac, PC (Microsoft Windows) and Web browser. It runs on Ren'Py.
The premise, in the publisher's words
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.
How it plays
Its themes are fantasy and romance. It is a single-player game with no multiplayer component.
What it launched against
Ninon the Upside-Down Mermaid launched on 17 April 2026, within three weeks of Pragmata, Replaced, Saros and Mouse: P.I. For Hire.
Released around the same time: Pragmata, Replaced, Saros, Mouse: P.I. For Hire.
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