How many people are playing Old Ninja : UnderWorld right now?

Old Ninja : UnderWorld is app 3968810 on Steam. Player counts appear once the tracker has sampled it.

What is the all-time peak player count of Old Ninja : UnderWorld?

0 concurrent players on 12 Sep 2026.

When was Old Ninja : UnderWorld released on Steam?

Old Ninja : UnderWorld was released on Steam on 19 Sep 2025.

Status

SteamPeaks

Old Ninja : UnderWorld

GameApp ID 3,968,810by Waterfall StudioReleased 19 Sep 2025

WindowsEngine —

View on SteamSteamCompare

App ID3,968,810

Release date19 Sep 2025

Engine—

Install size519 MB

TypeGame

Last update24 Sep 2025

Steam Deck—

DLC0

DeveloperWaterfall Studio

Changenumber34,988,649

Price—

Packages0

PublisherWaterfall Studio

SystemsWindows

Followers—

Depots1

Compare this game

Old Ninja : UnderWorld

Waterfall Studio
Released 19 Sep 2025·App 3968810

Steam user reviews

Not enough reviews yet

2 so far · summary at 10

SteamPeaks Rating

Not enough reviews yet

Rated from 10 reviews

How it works

Last seen

Sampled 5 hours ago · not a live figure

—of peak

All-time peak

12 Sep 2026

Steam user reviews · 2 written

Updated 12 Sep 2026, 00:00 UTC

SteamPeaks Rating

New

Needs ten reviews

Positive share

0.0%2 user reviews

Last 30 days

—

No reviews in the last 30 days

Played before writing

—

Sampling starts with the review poller

Reviews per day

—

From Valve’s daily histogram

How sentiment moved · share of new reviews that were positive

Awaiting the histogram

Not enough samples yet. The line appears once a few readings are in.

Positive shareReviews writtenLifetime shareDrag across the chart to zoom · double-click to reset

Old Ninja : UnderWorld Reviews · SteamPeaks

Old Ninja : UnderWorld

Old Ninja : UnderWorld

Who is reviewing

Review history