About
Arcanum: Of Steamworks and Magick Obscura by Troika Games (2001) is a deep, sprawling cRPG set in a Victorian-era steampunk world where technology and magic are in constant tension, featuring extraordinary character build freedom and a branching narrative. Available on GOG and Steam. On the Steam Deck it requires the Unofficial Arcanum Patch, a ddraw.dll swap, and Heroic Launcher for the smoothest experience, but rewards the setup effort with dozens of hours of rich RPG gameplay.
Identity
Launch
- Binary
- Arcanum.exe
- Options
- -no3d -doublebuffer
- Needs files
- none beyond the binary
Proton
- Version
- Proton Experimental
- Winetricks
- —
- ProtonDB
- ProtonDB Silver runs with minor issues
⚙ Setup notes
ProtonDB / Valve Rating vs. Reality
ProtonDB community reports place Arcanum around the Silver tier — playable, but only
after manual tweaks (launch options, a ddraw.dll swap, and the community patches
below). Valve officially rates it "Unsupported" on Steam Deck. In practice the game
is playable once configured. You can install either the Steam version (app 500810) or
the GOG version via Heroic Launcher; GOG-via-Heroic tends to be the easiest to patch.
Binary / Launcher Note
The actual game executable is Arcanum.exe. The Steam build normally boots through
SierraLauncher.exe, a config front-end that is awkward under Proton. Point the
launch target directly at Arcanum.exe (run config.exe once first if you need to set
resolution, then switch back to Arcanum.exe). Use launch options -no3d -doublebuffer
to avoid the 3D-acceleration path that stutters badly under Proton.
Recommended Install Path: GOG via Heroic
1. Install Heroic Games Launcher from the Discover software center in Desktop Mode.
2. Log in with your GOG account and install Arcanum.
3. In Heroic, set the Wine/Proton version for Arcanum to Proton Experimental
(or Wine-GE latest).
4. Launch once to generate the Wine prefix, then close.
Unofficial Arcanum Patch (UAP) — essential
The UAP (current builds are 1.5.1+) is effectively mandatory for a stable experience.
It fixes hundreds of bugs including quest-breaking crashes, dialogue errors, and the
infinite loading screen issue, and it bundles the high-resolution patch. Links and
install instructions are documented on PCGamingWiki (see Guides). Install the patch
executable inside the game's prefix — through Heroic's "Run EXE in Wine prefix" option,
or for the Steam version by running it via Proton against the install folder.
High-Resolution Patch — essential
The default 800x600 resolution is tiny on the Deck screen. The high-res patch (shipped
with the UAP, also covered on PCGamingWiki) unlocks higher resolutions; apply it via
its _install.bat/config, then set resolution to 1280x720 or 1280x800 in the launcher.
ddraw.dll Fix for Frame Drops
The original DirectDraw renderer causes significant frame drops and stuttering.
Replace ddraw.dll in the game directory with the Wine-provided version:
cp ~/.wine/drive_c/windows/system32/ddraw.dll <game_dir>/ddraw.dll
Or use DDrawCompat from GitHub as an alternative — copy DDrawCompat's ddraw.dll
into the game folder.
Infinite Loading Screen Workaround
Occasional infinite loading screens occur even with UAP. If stuck, Alt+F4 the game
and relaunch — saves are preserved. This is a known engine issue without a clean fix.
Steam Community Linux/Deck Guide
Steam Community guide ID 3198444292 covers the full Linux and Steam Deck UAP
installation flow step by step.
Controls on Deck
Arcanum has no native gamepad support — it is entirely mouse-and-keyboard driven, so
you rely entirely on Steam Input. Use the right trackpad as a mouse with left-click on
R2 and right-click on L2. The on-screen keyboard (Steam button + X) is needed only for
character naming. Community controller layouts are available in the Steam Input browser.
Install Method
Either install the Steam copy (app 500810) and force Proton via the title's
Compatibility settings, or install the GOG copy through Heroic Games Launcher in
Desktop Mode. Apply the UAP + high-res patch into the prefix/install folder before
your first real playthrough.
The one thing to know
- Not yet verified on hardware — status is needs-test.
- ProtonDB ~Silver: playable, but only after launch options + patches. Valve rates it "Unsupported".
- Binary is Arcanum.exe; the Steam build's SierraLauncher.exe is awkward under Proton — target Arcanum.exe directly.
- Use launch options -no3d -doublebuffer to avoid the stuttering 3D-accel path.
- UAP (Unofficial Arcanum Patch, 1.5.1+) is essential; it also bundles the high-res patch (see PCGamingWiki).
- High-res patch needed for comfortable text/UI readability on the Deck screen (set 1280x720/800).
- Replace ddraw.dll with the Wine or DDrawCompat version to fix frame drops.
- No native gamepad support — entirely mouse/keyboard, so Steam Input + right trackpad is essential.
- Occasional infinite loading screens are a known engine bug; save frequently.
Community guides
Write-ups and threads from people who got this (or a similar) game running. deckport links to them — it doesn't reproduce them.
Get the artwork
deckport never hosts game images. Open this game on SteamGridDB, pick
the cover / hero / logo / icon you like, and drop them into the
game folder under .deckport-art/ before you push it to the
Deck. The importer files them under the right names automatically.
Run it on your Deck
Two files: the one-time importer (deckport.py) in your
Deck's home folder, and this game's install helper. Copy the game
into ~/Games and run the helper with Steam closed — it
writes the recipe (binary, launch options, Proton version)
and registers the shortcut with artwork.