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Playing Eroge on Linux in 2026 (Screw Windows 11)

Haiyami

Trusted Member
Elite
Oct 22, 2011
572
70
So I'm going to start off with a few things about gaming on linux. It's pretty easy now a days. THere are a few things though to take note of. What is best to do is run the games through steam. Add the games as a non-steam game. Then right click the game you added to your steam library and chose properties. In properies menu go to shortcuts and then chose Launch options. In the launch option box add this line. LANG=ja_JP.UTF-8 %command%. Next you'll want to go down to compatibility and chose proton 9.0.4. You'll be able to play the game in japanese.

Now there are a few things to note. If you have a separate hard drive that you previously installed games on a windows machine you may be able to get some games to run in linux by adding the .exe to the library. But that's only if the game was installed recently in the windows operating system to get it logged in the registry. Sometimes they will ask you reinstall or load the original disk. The issue with linux is that it will not mount mdf, mds or cue, bin image files. The format must be .iso so you'll need to use a tool like daemon tools or the the like to reconvert a .cue or .mdf file as as .iso file. Sometimes you'll be able to get the game to boot, other times you'll need to just reinstall. I should probably make it a point that for people ripping eroge going forward should avoid riping the install disk as a .mdf and .mds file as that's splitting the data into two. image disks as .bin and .cue should also be avoided. All eroge going forward that's being ripped should be in the .ISO format. as Linux reads these perfectly.


To reinstall the game, if you have an eroge with an image file as a .iso, mount the disk then open up the disk as a directory and add the launcher to steam. Once the launcher.exe or setup.exe is added to the steam library, right click on the launcher and chose properties>shortcuts>launch options and add LANG=ja_JP.UTF-8 %command%. Next, in the menu to the left chose compatibilty and chose proton 9.0.4. Now run the launcher or setup.exe of the game you want to install and follow the typical windows instructions to install steam.

By the way you'll want have the repository version of steam installed on linux. DO NOT use flatpak. You'll have tons of issues. Also there is a setting to standardize the virtualized windows drive letters in steam that runs under wine, but I'm not exactly sure how to access it in the GUI, so I had to access the file directories in the /home/[username]/.steam/steam/steamapps/compatdata/ directory to edit linking files. In the compdata file there will be a folder for each non-steam game you added that acts acts a virtual My computer environment. It's really tedius going into it this way but sometime later in the week I'll record a video of what I did. Again there must be an easier way to get steam's wine drive settings to be uniform across every non-steam game you add and use the same settings in the wine app config settings. But so far as what I see is that WINE and steams WINE are completely differnet virtualations of drive letters. SO maybe someone smarter than me can figure it out.

By the way somepeople just tell me to run a virtual machine and run an older version of windows with Linux as the host. But I'd rather not do that. I haven't had good luck lately with getting drivers installed on a virtual machine for windows xp and have had major issues with sound and getting foreign languages installed via xp. The goal this little blurb here is to give people a bit of a hint of how to get Japanese EROGE meant for windows to run natively in linux without a virtual machine. It's mostly painless but there are a few games that are headaches to run. RUNE's games like Furufuru and Shishunki I've run into a few issues to get them to work using steam as a launcher. I've also had issues with Tanuki-soft games and Kaeru-soft games. If enough people want me to make videos of how I'm getting eroge to run natively on Linux please post below and I'll work on making a video.
 
As long time VN reader and Linux user I recommend other method that does not use Steam.

Install lutris, protonup-qt, wine, protontricks, umu-launcher.
Open protonup-qt and install the latest version for proton-ge for lutris
Add a game or program in lutris, select a prefix path that is not /home/user/.wine (you can use whatever)
Run it, the prefix will be generated, probably the game will also open, you can close it.

Add this script to /home/user/.local/bin
#!/bin/bash
WINEPREFIX="$HOME/.the_name_of_your_wine_prefix"
PROTONPATH="$HOME/.local/share/lutris/runners/wine/the_proton_version_you_installed"
WINEPREFIX="$WINEPREFIX" PROTONPATH="$PROTONPATH" GAMEID="0" umu-run "$1"


Add this .destkop file to /home/user/.local/share/applications
[Desktop Entry]
Type=Service
MimeType=application/x-ms-dos-executable;application/x-msi;application/x-ms-shortcut;application/x-bat;application/x-mswinurl
Actions=RunWithProtonGE
X-KDE-StartupNotify=false

Name=Run with Lutris Proton-GE
Icon=lutris
Exec=/home/orion/.local/bin/the_name_of_the_script.sh "%f"
Name[ja_JP]=Run with Lutris Proton-GE.desktop


Why this method ? Each time you add a game to steam with proton it created a protonprefix for that game, each prefix will start with around 600MB of size, if you delete the game from steam the prefix disapears totally, that is a waste of space and you can lose your save files, what this method does it make all the games run in one prefix without steam with the same benefits and you can just use your file manager and click on a .exe and run it with the .destkop file.

Want to install a game ? double click .exe installer and run it with "Run with Lutris Proton-GE", installed.
Want to run a game ? double click the .exe and it runs.


In some cases you will need to use .ISO files, for this you must set some directories where you will always mount "disks", I normally use ~/マウント/P1 or P2, so to set this for mount points in wine/proton you need to open protontricks with lutris, go to the game you added and in the icon below (the one at the side of "Run") there is an arrow pointing up, if you click on it a menu appears, select run "winetricks", select default prefix, open winecfg, go to drives, add a mount point for a CD drive and select the directory where you will always mount, btw, to access your Linux filesystem outside the prefix you need to navigate to drive Z inside the prefix. Save and exit.

Now, to mount a ISO file I normally do: sudo mount file.ISO ~/マウント/P1



This is the peak method for running eroge or any game on Linux, it works with everything except games from steam that require weird configs, so it works in almost every VN.

Ah, and I forgot to mention, I always recommend switching your system locale to japanese, but if you don't wan't I think you can just add a variable to the script to run the game and proton with japanese locale.