Where your logs live
On Windows it's one folder. On Linux and macOS nobody has pinned it down yet, so this page says what's known and what isn't.
- client.log is replaced every time Luduvo starts. Grab it straight after the game fails, before you try again. source
- crash.log only arrived in build 44, on Windows. It's often empty, which just means nothing crashed that time. source 1source 2
- For client problems, client.log and crash.log matter most. For Studio problems, studio.log and crash.log. source
- Deleting client.log is harmless. Luduvo writes a new one next time. source
Windows
Your logs: client.log, crash.log, launcher.log, app.log, studio.log and state.json
%LocalAppData%\Luduvo\Press Win + R, paste the path, press Enter.
Source: matt's debug guide, File list
Older zip installs from launch week and the alpha
Next to the extracted Luduvo folder, for example Downloads\windows-x86_64\Luduvo\Open the folder you unzipped Luduvo into.
Source: Nikhil on zip installs
Your graphics settings: Settings.cfg
%APPDATA%\Luduvo\Client\Settings.cfgPress Win + R, paste the path, press Enter. It opens in Notepad.
Source: Where Settings.cfg lives
Can't find the install? Use the Start menu
Press the Windows key, type Luduvo, right-click the first result and pick Open file location. If that opens a shortcut, right-click it and pick Open file location again.
Source: matt's tip
Linux not documented
The easiest way: run Luduvo from a terminal and copy what it prints
luduvo --singleplayerOpen a terminal, run the command, and when it fails, copy everything it printed. You can paste it straight into the Doctor.
Downloaded content
~/.local/share/Luduvo/Client/contentConfirmed by several logs.
Source: Linux log showing the path, Another
Log files, probably somewhere under here unconfirmed
~/.local/share/Luduvo/Nobody has confirmed where Linux writes client.log, and some players say it doesn't write one at all.
macOS not documented
The game and Studio programs
<your download>/Luduvo/bundle/usr/bin/LuduvoGame and LuduvoEditor live here. Running them from Terminal shows their output.
Downloaded content, maybe unconfirmed
~/Library/Application Support/Luduvo/Client/contentOne error message showed /Library/Application Support/Luduvo. It may really be in your home folder's Library.
Source: The error message
Log files unconfirmed
One Mac player could only find studio.log. crash.log was only announced for Windows.
Thanks to matt, whose Windows debug guide this page builds on. Last checked 26 Sep 2026.