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Non-Steam Games



Find the exe path for non-steam files

You can use Konsole and the find command in desktop mode to search for any file you want

  1. Press STEAM > Power > Desktop Mode
  2. Goto All Applications and open Konsole

Format your searches from the examples below

Search for Non-Steam games installed using steam

# Format: find [dir] -iname [file name (wildcards allowed, case insensitive)]
# find battle.net launcher EXE path
# you'll need to have set a user password previously, if not you can run 'passwd' to do this now
sudo find /home/deck/.local/share/ -iname "battle.net*launcher*exe"

#output
/home/deck/.local/share/Steam/steamapps/compatdata/2738429330/pfx/drive_c/Program Files (x86)/Battle.net/Battle.net Launcher.exe


Search entire deck for TheAscent.exe, / is the root directory, meaning everything will be search SSD and SD

sudo find / -name "*ascent*exe"


Search SD Card for TheOuterWorlds.exe, /run/media/ is the is the mount point for SD cards

sudo find /run/media/ -name "*outer*world*exe"


Find MassEffectAndromeda.exe in it's compatdata folder, /home/deck/.local/share/Steam/steamapps/compatdata is where 3rd party stores will install games, provided you used Steam to run the store installer.

sudo find /home/deck -name "MassEffectAndromeda.exe"




BoilR (import non-steam shortcuts and cover art)

  • install BoilR sudo flatpak install io.github.philipk.boilr
  • Application Launcher > All Applications > BoilR
  • Import Games (tab) > Click Import your games into steam (bottom left)



BoilR (import cover art from SteamGridDB)

  • (optional) register account on https://www.steamgriddb.com
  • Create an API Key https://www.steamgriddb.com/profile/preferences/api
  • Copy the API Key
  • Paste it into: Settings > Authorization key
  • *Check boxes for Download Images and Prefer animated images



Battle.net

  • download Battle.net-setup.exe using Chrome in Desktop Mode
  • Add a Non-Steam game to steam pointed at /home/deck/Downloads/Battle.net-setup.exe
  • Accept Default installation Path and allow install to complete



Origin (EA)

  • download OriginThinSetup.exe using Chrome in Desktop Mode
  • Add a Non-Steam game to steam pointed at /home/deck/Downloads/OriginThinSetup.exe
  • Accept Default installation Path and allow install to complete



Epic Games Store

Use Heroic Games Launcher for Epic and GoG

  • install HGL sudo flatpak install com.heroicgameslauncher.hgl
  • Application Launcher > All Applications > Heroic Games Launcher
  • Connect to Epic Games Store with your account
  • Install games from the Library tab
  • (optional) use BoilR to automatically import game shortcuts into Steam



Steam Launch Options

These are variables that can be specified at runtime, useful for adding non-steam games

STEAM_COMPAT_DATA_PATH: specifies the directory where the wine prefix will exist

  • example: /home/deck/.local/share/Steam/steamapps/compatdata/4021751282

PROTON_LOG: set to 1 to enable proton logs

  • example: PROTON_LOG=1

DXVK_HUD: force an fps counter for Vulkan

  • example: DXVK_HUD= devinfo, fps, frametimes

Launch Options Example

STEAM_COMPAT_DATA_PATH=/home/deck/.local/share/Steam/steamapps/compatdata/4021751282 PROTON_LOG=1 %command%



Logging

Relevant Logging Directories

  • Steam Proton Logs ~/steam-* example: steam-17791636650569236480.log
  • Proton Crash Logs /tmp/proton_crashreports
  • Heroic Games Launcher Logs /home/deck/.var/app/com.heroicgameslauncher.hgl/config/heroic/GamesConfig
  • Steam Launcher Logs /home/deck/.local/share/Steam/logs/



Managing Storage

overview

The Steam Deck makes it really easy to manage Steam games installed, this is in part due to valve including an appmanifest file for each game and package installed that gives it's SizeOnDisk unfortunately Non-Steam games and utilities don't get totalled into this calculation so you may be left wondering Where did my space go?

In this scenario I have a 256GB Local SSD, approximately 29GB is used by installed Steam games, but another 128GB is totally unaccounted for. I'll now go through my process to find where that space is consumed.


basic disk usage

  1. Go the desktop mode by pressing STEAM > Power > Switch to Desktop Mode
  2. open Konsole

alternatively you can connect via SSH from another PC ssh deck@steamdeck this makes pasting long commands significantly easier

  1. Run the following command at the prompt
df -h

df = linux command for Disk Free

This will give us a breakdown of how each disk partition and mountpoint is using space.

Since SteamOS uses an immutable file system, we'll want to focus on our /home/deck directory


Home Directory Overview

  1. Run the following command
du -h -d3 -t 100M /home/deck | sort -h

du = linux command for Disk Usage -h = Human-Readable, so we'll see directory sizes in standard units vs bytes, -d3 = depth this will show us only subdirectories that are 3 or less levels down from the top /home/deck directory -t 100M sets the size threshold to results greater than 100MB

PROTIP: pressing the up arrow will always go back to your last command, this is easier than retyping each time.


  1. We can filter the results using the grep command, we'll use this to filter specific patterns

grep (Global Regular Expression Print) is a very useful linux command we can use to filter output and determine what prints on the screen.

  1. I'll now show different command examples breaking down these results

flatpak

 du -h -d3 -t 100M /home/deck | sort -h | grep .var/app

First we notice a number of results in /home/deck/.var/app this is where a lot of our packaged desktop applications will go,
anything we install using either flatpak or Discover will go to this directory,
we can see Chrome, protontricks and Heroic Games Launcher all installed here so this accounts for about 2GB in my case.



Heroic Games

 du -h -d3 -t 100M /home/deck | sort -h | grep Heroic

Next we'll look at Heroic in /home/deck/Games/Heroic, we can see this accounts for a full 20GB of space,
and we can see both Rebel Galaxy Outlaw and Unrailed installed as well as some prefix data.



Excluding Results

 du -h -d3 -t 100M /home/deck | sort -h | grep -Ev 'Heroic|.var'

we're now using grep -Ev this is an inverted match, we're now looking for lines that don't match the pattern
-E turns on extended regular expression which allows us to use more advanced patterns
| is a separator, any pattern we place in this string with the separator will be filtered out of the results so in this case we're filtering out our previous results containing Heroic and .var


We can see that .paradoxlauncher (Stellaris) seems to account for about 500MB, there's about 1.2GB of .cache data so we've accounted for about 24GB of other data in total now, but we still have over 100GB unaccounted for.


Steam Apps

 du -h -d1 -t 100M /home/deck/.local/share/Steam | sort -h

we're now targeting the Steam directory


We immediately see that steamapps is consuming 120GB there's also a number of other smaller directories, that appear related to the OS or Proton compatibility.
du -h -d1 -t 100M --exclude="steamapps" -c /home/deck/.local/share/Steam | sort -h will show us the results excluding the steamapps directory --exclude="steamapps" will exclude this pattern and -c will add a total line so we can see how much these directories consume, in my case it's 5.3GB we'll round up in case we missed anything


Compatdata

du -h -d1 -t 100M  /home/deck/.local/share/Steam/steamapps/compatdata | sort -h

the compatdata directory is where the proton compatibility files get installed for every game, this can really add up if steam fails to delete the directories for games you uninstall or if a Non-Steam game doesn't get cleaned up properly
Additionally any Non-Steam game that you use Steam to install will have the entire game installed into it's compatdata directory



Contents of my compatdata directory

188M    /home/deck/.local/share/Steam/steamapps/compatdata/1042800
188M    /home/deck/.local/share/Steam/steamapps/compatdata/1944570
188M    /home/deck/.local/share/Steam/steamapps/compatdata/2024230
188M    /home/deck/.local/share/Steam/steamapps/compatdata/238960
188M    /home/deck/.local/share/Steam/steamapps/compatdata/2611203949
188M    /home/deck/.local/share/Steam/steamapps/compatdata/323190
188M    /home/deck/.local/share/Steam/steamapps/compatdata/527430
188M    /home/deck/.local/share/Steam/steamapps/compatdata/632360
189M    /home/deck/.local/share/Steam/steamapps/compatdata/1774050
189M    /home/deck/.local/share/Steam/steamapps/compatdata/1869380
189M    /home/deck/.local/share/Steam/steamapps/compatdata/1887720
189M    /home/deck/.local/share/Steam/steamapps/compatdata/2106550
189M    /home/deck/.local/share/Steam/steamapps/compatdata/2113430
189M    /home/deck/.local/share/Steam/steamapps/compatdata/911430
190M    /home/deck/.local/share/Steam/steamapps/compatdata/2083070
191M    /home/deck/.local/share/Steam/steamapps/compatdata/396480
192M    /home/deck/.local/share/Steam/steamapps/compatdata/1794680
200M    /home/deck/.local/share/Steam/steamapps/compatdata/2579677180
202M    /home/deck/.local/share/Steam/steamapps/compatdata/1966900
204M    /home/deck/.local/share/Steam/steamapps/compatdata/1660320
215M    /home/deck/.local/share/Steam/steamapps/compatdata/0
216M    /home/deck/.local/share/Steam/steamapps/compatdata/2581508876
216M    /home/deck/.local/share/Steam/steamapps/compatdata/2791824981
216M    /home/deck/.local/share/Steam/steamapps/compatdata/3550137221
217M    /home/deck/.local/share/Steam/steamapps/compatdata/4275862806
260M    /home/deck/.local/share/Steam/steamapps/compatdata/700600
337M    /home/deck/.local/share/Steam/steamapps/compatdata/2914290092
420M    /home/deck/.local/share/Steam/steamapps/compatdata/288370
424M    /home/deck/.local/share/Steam/steamapps/compatdata/1062090
427M    /home/deck/.local/share/Steam/steamapps/compatdata/710920
436M    /home/deck/.local/share/Steam/steamapps/compatdata/1030210
468M    /home/deck/.local/share/Steam/steamapps/compatdata/290300
502M    /home/deck/.local/share/Steam/steamapps/compatdata/979690
523M    /home/deck/.local/share/Steam/steamapps/compatdata/219990
624M    /home/deck/.local/share/Steam/steamapps/compatdata/1128920
645M    /home/deck/.local/share/Steam/steamapps/compatdata/768520
29G     /home/deck/.local/share/Steam/steamapps/compatdata/2738429330
49G     /home/deck/.local/share/Steam/steamapps/compatdata/4021751282

In my case I have 38 games installed between my SteamDeck SSD and MicroSD, what's worth noting is steam uses <APPID> to identify where game files are installed for shadercache compatdata and other files. Most Steam AppIDs are 3-7 digits long, the longer numbers are mostly likely 3rd party Non-Steam games, we should focus on those


Filtering Non-Steam Games

Which brings us to...

# In the IT Industry we call that a One-Liner :)
du -h -d1 -t 100M  /home/deck/.local/share/Steam/steamapps/compatdata | sort -h | awk '{print $2}' | grep -E '\/[[:digit:]]{8,20}$' | xargs du -h -d5 -t 200M | grep drive_c | sort -h

I'll try to explain a few things
awk is being used to select only the 2nd column from our du command
grep -E is being used to find directory names that have between 8 and 20 digits in the name since most APPIDs are 7 or less digits
[[:digit]] is a class selector, it's matching only numeric characters, and {8,20} is only matching filenames between 8-20 digits long
xargs allows us to pass the output of our previous command to another command so I'm passing only the directory's that I believe to be Non-Steam games to another du command to narrow down the results.
lastly grep drive_c is finding the fake c:\ that exists in wine prefixes this is where Windows files will reside

And now it all starts to make sense...
4021751282 appears to be where I installed the Origin store and also installed Mass Effect Andromeda accounting for another 49GB
2738429330 seems to be a Non-Steam installation of Battle.net including Diablo II Resurrected another 29GB
The remaining Non-Steam directories account for another about 1GB

You don't have to understand regular expression to use it, just paste the full command above and you'll get similar results
I've been using REGEX for 15+ years and I still get confused and think it's Black Magic half the time


Storage Breakdown

So lets review what we've found

size directory contents
2GB /home/deck/.var/apps flatpak apps
20GB /home/deck/Games/Heroic Heroic Games Launcher Games
2GB /home/deck/.paradoxlauncher and .cache Hidden Launcher and generic cache files
6GB /home/deck/.local/share/Steam except steamapps SteamOS and Compatibility files
49GB /home/deck/.local/share/Steam/steamapps/compatdata/4021751282 Origin (Mass Effect Andromeda)
29GB /home/deck/.local/share/Steam/steamapps/compatdata/2738429330 Battle.net (Diablo II Resurrected)
1GB /home/deck/.local/share/Steam/steamapps/compatdata/########## Other Non-Steam games
5GB /home/deck/.local/share/Steam/steamapps/shadercache Shader Cache
114GB Total Accounted out of 128GB Other files

While there still is another 14GB unaccounted for, it's possible some of this is consumed by common files for other Non-Steam games as well as proton prefixes that didn't get cleanly uninstalled.

This isn't a perfect system but hopefully this helped you understand where your storage is going.