Opus Magnum
| App ID | 558990 |
| App Type | Game |
| Developer | Zachtronics |
| Publisher | Zachtronics |
| Supported Systems | Windows macOS Linux |
| Last Changenumber | 31912654 |
| Last Record Update | 26 October 2025 – 20:26:25 UTC ( |
| Release Date | 7 December 2017 – 17:53:00 UTC ( |
Opus Magnum is the latest open-ended puzzle game from Zachtronics, the creators of SpaceChem, Infinifactory, and SHENZHEN I/O. Design and build machines that assemble potions, poisons, and more using the alchemical engineer’s most advanced tool: the transmutation engine!
Additional Information
| Developer | Zachtronics | |||||||||||||||||||||||||||
| metacritic_name | Opus Magnum | |||||||||||||||||||||||||||
| metacritic_score | 90 | |||||||||||||||||||||||||||
| metacritic_fullurl | https://www.metacritic.com/game/pc/opus-magnum?ftag=MCD-06-10aaa1f | |||||||||||||||||||||||||||
| community_visible_stats | Yes | |||||||||||||||||||||||||||
| workshop_visible | Yes | |||||||||||||||||||||||||||
| ReleaseState | released | |||||||||||||||||||||||||||
| Publisher | Zachtronics | |||||||||||||||||||||||||||
| Store Release Date | 7 December 2017 – 17:53:48 UTC ( |
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| osarch | empty string | |||||||||||||||||||||||||||
| community_hub_visible | Yes | |||||||||||||||||||||||||||
| Primary Genre | Simulation (28) | |||||||||||||||||||||||||||
| Store Genres | Indie (23), Simulation (28) | |||||||||||||||||||||||||||
| Steam Release Date | 7 December 2017 – 17:53:00 UTC ( |
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| Store Asset Modification Time | 29 October 2022 – 19:05:43 UTC ( |
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| library_assets |
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| osextended | macos64 | |||||||||||||||||||||||||||
| review_score | 9 | |||||||||||||||||||||||||||
| review_percentage | 97 | |||||||||||||||||||||||||||
| Detected Technologies (?) | Ogg SDK, SDL SDK, SteamworksNET SDK, Vorbis SDK | |||||||||||||||||||||||||||
| Steam Deck Compatibility |
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| First seen on SteamDB | 15 November 2016 – 19:50:20 UTC ( |
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Supported Languages
| 12 Languages | Interface | Full Audio | Subtitles |
|---|---|---|---|
| English | Yes | ||
| French | Yes | ||
| German | Yes | ||
| Japanese | Yes | ||
| Russian | Yes | ||
| Simplified Chinese | Yes | ||
| Spanish - Latin America | Yes | ||
| Korean | Yes | ||
| Turkish | Yes | ||
| Ukrainian | Yes | ||
| Portuguese - Portugal | Yes | ||
| Czech | Yes |
Tags
Categories
Single-player
Steam Achievements
Steam Workshop
Steam Cloud
Steam Leaderboards
Includes level editor
Family Sharing
Cloud Gaming
Cloud Gaming (NVIDIA)
Assets
Load all asset images
| trailer_name | Opus Magnum Trailer |
| trailer_category | 0 |
| trailer_480p ↴ | |
| video/webm | 256697803/movie480.webm |
| video/mp4 | 256697803/movie480.mp4 |
| trailer_max ↴ | |
| video/webm | 256697803/movie_max.webm |
| video/mp4 | 256697803/movie_max.mp4 |
| microtrailer ↴ | |
| video/webm | 558990/127514/6ebf4fd8b8a4cea71df5df6bb172bf0a25c6604d/1750551251/microtrailer.webm |
| video/mp4 | 558990/127514/6ebf4fd8b8a4cea71df5df6bb172bf0a25c6604d/1750551251/microtrailer.mp4 |
| adaptive_trailers ↴ | |
| dash_av1 | 558990/127514/6ebf4fd8b8a4cea71df5df6bb172bf0a25c6604d/1750551251/dash_av1.mpd |
| dash_h264 | 558990/127514/6ebf4fd8b8a4cea71df5df6bb172bf0a25c6604d/1750551251/dash_h264.mpd |
| hls_h264 | 558990/127514/6ebf4fd8b8a4cea71df5df6bb172bf0a25c6604d/1750551251/hls_264_master.m3u8 |
| screenshot_medium | 256697803/movie.293x165.jpg |
| screenshot_full | 256697803/movie_full.jpg |
| all_ages | true |
| is_highlight | true |
| timestamp | 16 October 2017 – 16:40:49 UTC |
User File System
| Key | Value | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| quota | 93.13 GiB (100000000000) | ||||||||||||||||||||||||||||||||||||
| maxnumfiles | 10000 | ||||||||||||||||||||||||||||||||||||
| savefiles |
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| rootoverrides |
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Save File Locations
Based on the configuration above, this is where we think the save files are located.
Read more about cloud saves in Steamworks documentation.
| Platform | Path | Pattern |
|---|---|---|
| [All OSes] | [Steam Library]/steamapps/common/Opus Magnum/{64BitSteamID} | save.dat |
| [All OSes] | [Steam Library]/steamapps/common/Opus Magnum/{64BitSteamID} | *.solution |
| [All OSes] | [Steam Library]/steamapps/common/Opus Magnum/{64BitSteamID}/custom | *.puzzle |
| Windows (Override) | %USERPROFILE%/My Documents/My Games/Opus Magnum{64BitSteamID} %USERPROFILE%/My Documents/My Games/Opus Magnum{64BitSteamID} %USERPROFILE%/My Documents/My Games/Opus Magnum{64BitSteamID}/custom |
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| MacOS (Override) | ~/Library/Application Support/Opus Magnum{64BitSteamID} ~/Library/Application Support/Opus Magnum{64BitSteamID} ~/Library/Application Support/Opus Magnum{64BitSteamID}/custom |
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| Linux (Override) | $XDG_DATA_HOME/Opus Magnum{64BitSteamID} $XDG_DATA_HOME/Opus Magnum{64BitSteamID} $XDG_DATA_HOME/Opus Magnum{64BitSteamID}/custom |