How many people are playing Ninon the Upside-Down Mermaid right now?

Ninon the Upside-Down Mermaid is app 4789210 on Steam. Player counts appear once the tracker has sampled it.

Ninon the Upside-Down Mermaid

GameApp ID 4,789,210Released —

—Engine —

App ID4,789,210

Release date—

Engine—

Install size—

TypeGame

Last update10 Sep 2026

Steam Deck—

DLC0

Developer—

Changenumber38,752,170

Price—

Packages0

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Systems—

Followers—

Depots0

Ninon the Upside-Down Mermaid

Steam user reviews

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0 so far · summary at 10

SteamPeaks Rating

Not enough reviews yet

Rated from 10 reviews

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