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.

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

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

WindowsEngine —

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

Old Ninja : UnderWorld

Steam user reviews

Not enough reviews yet

2 so far · summary at 10

SteamPeaks Rating

Not enough reviews yet

Rated from 10 reviews

Last seen

Sampled 5 hours ago · not a live figure

—of peak

All-time peak

12 Sep 2026

PICS config · launch options

1 launch options

#	Executable	Arguments	Type	OS	Description
0	ActionGame_2D.exe	—	default	windows	—

Key	Value
installdir	OldNinja_UnderWorld

Old Ninja : UnderWorld Configuration · SteamPeaks