Opus Magnum

Overview

App ID558990

Release dateDec 7, 2017

Last change number40100461

Last record update22 hours ago

App info

App type

Game

Developer

Zachtronics

Publisher

Zachtronics

Steam profile

Counts toward game count and achievement totals · checked Nov 1, 2025

Metacritic

90

Website

zachtronics.com/opus-magnum

Platforms

Windows macOS Linux 64-bit

Steam Deck

Playable

Features

7

Single-playerSteam AchievementsSteam WorkshopSteam CloudSteam LeaderboardsIncludes level editorFamily Sharing

Patches

Builds

4

Build	Branch	Updated
26115378	public	Oct 21, 2026
26115258	community-edition	Oct 21, 2026
22551618	old-mono	Mar 28, 2026
7267531	previous	Jan 17, 2022

Packages & DLC

DLCs

1

ID	Name	Price (US)
3107410	Not on the store yet	—

Depots

Depots

4

ID	Name	Systems	Size	Download	Manifest
229007	— shared from 228980	Windows	—	—	—
558991	—	Windows	651.3 MB	396.1 MB	380566682631885159
558992	—	macOS	690.9 MB	408.4 MB	3751542434149656615
558993	—	Linux	705.2 MB	411.5 MB	433403222997881597

Branches

4

Branch	Build	Updated	Access
public	26115378	Oct 21, 2026	Open
community-edition Community-made version with advanced features	26115258	Oct 21, 2026	Open
old-mono Old version of Mono for macOS 10.15	22551618	Mar 28, 2026	Open
previous Very old version for mod compatibility	7267531	Jan 17, 2022	Open

Configuration

Install foldersteamapps/common/Opus Magnum

Launch options

3

Executable	Arguments	Systems	Description
Lightning.exe		Windows	Launch
Opus Magnum.app/Contents/MacOS/Lightning		macOS	Launch
Lightning		Linux	Launch

Cloud saves

Space per player93.13 GB

Filesup to 10,000

Save locations3

Root	Path	Pattern	Systems
gameinstall	{64BitSteamID}	save.dat	All
gameinstall	{64BitSteamID}	*.solution	All
gameinstall	{64BitSteamID}/custom	*.puzzle	All