Released Aug 4, 2026 $4.99 Mixed Counts toward your Steam games

That's Not My Mom

By SolitaryStudios

Horror Simulation 3D Immersive Sim Walking Simulator Exploration First-Person Realistic IndiePsychological HorrorSingleplayer

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Reviews 21 Mixed

Players now 0 Peak today 0

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That's Not My Mom is a game tagged Horror, Simulation and 3D by SolitaryStudios, released Aug 4, 2026. It has 21 Steam reviews (Mixed). The Steam games most like it include Too Well Hidden, Gnome and Undersea 8.

An anomaly-finding horror game where you play as a young boy returning home from school. Search the house for disturbing changes, survive increasingly strange events, investigate your suspicious mother, and uncover the truth behind an anomaly outbreak spreading across the city.

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<a href="https://launchrivals.com/games/5000020-thats-not-my-mom"><img src="https://launchrivals.com/games/5000020/badge.png" alt="That&#039;s Not My Mom launch date" width="320" height="84"></a>

<a href="https://launchrivals.com/games/5000020-thats-not-my-mom"><img src="https://launchrivals.com/games/5000020/badge.png?theme=light" alt="That&#039;s Not My Mom launch date" width="320" height="84"></a>

Too Well Hidden 92% match · Horror, Simulation, 3D
Gnome 92% match · Horror, Simulation, 3D
Undersea 8 89% match · Horror, Simulation, 3D
Joymaker 86% match · Horror, Simulation, 3D
FLOOR 10 86% match · Horror, Simulation, 3D
Backward poiesis 85% match · Horror, Simulation, 3D
Lost in Anomaly 85% match · Horror, Simulation, 3D
The 5th Door 85% match · Horror, Simulation, 3D
WANTED? 85% match · Horror, Simulation, Immersive Sim
Twisted Gallery 异馆 84% match · Horror, Simulation, 3D

Steam data

Everything Steam lists for That's Not My Mom · record updated 1 day ago

Steam store

Overview

App ID5000020

Release dateAug 4, 2026

Last change number40226778

Last record update1 day ago

App type: Game
Developer: SolitaryStudios
Publisher: SolitaryStudios, Neuroticfly
Steam profile: Counts toward game count and achievement totals · checked 20 hours ago
Website: solitarystudios.games

Windows

Steam Deck: Playable

Single-playerFamily Sharing

Prices

Price · US$4.99

On sale0 of 41regions right now

Lowest seen · US$4.99Oct 23, 2026

Checked23 hours agoin 41 regions

Costa Rica₡CRC

Every price change is kept from Oct 23, 2026 on. Pick a region below to compare.

Patches

Build	Branch	Updated
24573223	public	Aug 5, 2026

Depots

ID	Name	Systems	Size	Download	Manifest
5000021	—	All	1.90 GB	998.8 MB	2720369578960628263

Branch	Build	Updated	Access
public	24573223	Aug 5, 2026	Open

Configuration

Install foldersteamapps/common/That's Not My Mom

Executable	Arguments	Systems	Description
That's Not My Mom.exe		All

Achievements

Achievements80 hidden

Most unlocked94%Day One!

Rarest0.3%1 Week Of Silence

Day One! Start from Day One 94%
Oiiaiooiiai Encounter the Oiiai Cat 61.4%
Finished! Survive and finish the game! 52.2%
That Was Close! Almost Finish The Game 27.7%
1 Week Of Nightmare Encounter anomalies every day for one week! 27.5%
Idle Master Idle / Don't move for 5 minutes 9.9%
Anomaly Master Encounter all anomalies 0.3%
1 Week Of Silence Survive one week without encountering any anomalies 0.3%

Data from public Steam pages, updated daily; 5 days of history. LaunchRivals is not affiliated with Valve or Steam.

That's Not My Mom

About That's Not My Mom

Steam data

Overview

App info

Platforms

Features

Prices

Costa Rica₡CRC

Americas 10

Europe 5

CIS 4

Asia-Pacific 15

Middle East & Africa 7

Patches

Builds

Depots

Depots

Branches

Configuration

Launch options

Achievements

Global unlock rate