Ninon the Upside-Down Mermaid release date
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.
- Release date
- April 17, 2026
- Developer
- Atelier in Wonderland
- Genre
- Indie, Visual Novel
Where to buy
No store listings yet.
Out now
Ninon the Upside-Down Mermaid released on .
Release dates by platform and region
| Platform | Region | Date | Unlock time | Status | Source |
|---|---|---|---|---|---|
| PC | Worldwide | Not announced | Released | Source |
Release date history
Date announced: April 17, 2026. Status: released — Upstream update (igdb) Source
Frequently asked questions
When does Ninon the Upside-Down Mermaid release?
Ninon the Upside-Down Mermaid released on April 17, 2026.
What time does Ninon the Upside-Down Mermaid unlock?
The exact unlock time has not been announced. Most digital releases unlock at midnight local time or at a single global time set by the publisher; this page will list it as soon as it is known.
Which platforms is Ninon the Upside-Down Mermaid on?
Ninon the Upside-Down Mermaid is releasing on PC.
Has Ninon the Upside-Down Mermaid been delayed?
No delay has been announced. This page tracks every date change with a source link.
Can I pre-order Ninon the Upside-Down Mermaid?
Pre-orders have not been listed yet. Stores and prices will appear here once available.
Related countdowns
Browse more: 2026 release calendar · Upcoming PC releases