Released Oct 5, 2026 $7.99 Positive Not counted on Steam profiles yet

Sinever: First Seal

By MAS Studios

Horror Co-op Realistic Psychological Horror Thriller Multiplayer Supernatural Online Co-Op Exploration3DFirst-PersonDark

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Reviews 21 Positive

Players now 0 Peak today 0

Followers, 30 days — Not enough history yet

Sinever: First Seal is a game tagged Horror, Co-op and Realistic by MAS Studios, released Oct 5, 2026. It has 21 Steam reviews (Positive). The Steam games most like it include Lost Lullabies: The Orphanage Chronicles, University 33 and School 666.

Sinever: The First Seal is a 1–4 player co-op psychological horror game. Explore an isolated Victorian estate, operate paranormal equipment, manage your sanity, and uncover the truth behind its imprisoned entity before the house claims you too.

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<a href="https://launchrivals.com/games/5001350-sinever-first-seal"><img src="https://launchrivals.com/games/5001350/badge.png" alt="Sinever: First Seal launch date" width="320" height="84"></a>

<a href="https://launchrivals.com/games/5001350-sinever-first-seal"><img src="https://launchrivals.com/games/5001350/badge.png?theme=light" alt="Sinever: First Seal launch date" width="320" height="84"></a>

Lost Lullabies: The Orphanage Chronicles 92% match · Horror, Co-op, Psychological Horror
University 33 91% match · Horror, Co-op, Psychological Horror
School 666 91% match · Horror, Co-op, Realistic
Horror Squad 87% match · Horror, Co-op, Realistic
Demonsomnia 86% match · Horror, Co-op, Psychological Horror
Dark Past 85% match · Horror, Co-op, Psychological Horror
Give Us A Sign 85% match · Horror, Co-op, Psychological Horror
Phylakterion 85% match · Horror, Co-op, Realistic
Project Unknown 84% match · Horror, Co-op, Psychological Horror
LockYourDoor 84% match · Horror, Co-op, Psychological Horror

Steam data

Everything Steam lists for Sinever: First Seal · record updated 1 day ago

Steam store

Overview

App ID5001350

Release dateOct 5, 2026

Last change number40186133

Last record update1 day ago

App type: Game
Developer: MAS Studios
Publisher: MAS Studios
Steam profile: Not counted yet: Steam is still getting to know this game, so it doesn't add to game counts or achievement totals · checked 19 hours ago
Website: sinever.com

Windows 64-bit

Single-playerMulti-playerCo-opOnline co-opSteam AchievementsFamily Sharing

Prices

Price · US$7.99

On sale0 of 41regions right now

Lowest seen · US$7.99Oct 23, 2026

Checked18 hours agoin 41 regions

MalaysiaRMMYR

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

Patches

Build	Branch	Updated
26163187	public	Oct 23, 2026

Depots

ID	Name	Systems	Size	Download	Manifest
228989	— shared from 228980	Windows	—	—	—
228990	— shared from 228980	Windows	—	—	—
5001351	—	All	4.98 GB	4.62 GB	3388201072566049237

Branch	Build	Updated	Access
public	26163187	Oct 23, 2026	Open

Configuration

Install foldersteamapps/common/Sinever

Executable	Arguments	Systems	Description
sinever.exe		Windows	Play Sinever

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

Sinever: First Seal

About Sinever: First Seal

Steam data

Overview

App info

Platforms

Features

Prices

MalaysiaRMMYR

Americas 10

Europe 5

CIS 4

Asia-Pacific 15

Middle East & Africa 7

Patches

Builds

Depots

Depots

Branches

Configuration

Launch options