simon the sorcerer with scummvm on steamdeck

install.sh

#!/bin/bash

echo "do not run this file directly!";
echo "Check for updates here: https://gist.github.com/auipga/8420bd5f89f6efd7415fbd88342f3ec7";
exit;

# here are the commands you need to copy over to a terminal (Konsole in this case):

passwd # if you have no password already set up

# install ScummVM
# (the executables delivered from steam fail to run)
# (see https://steamcommunity.com/app/674150/discussions/0/3184613494758371436/)
sudo pacman -Sy scummvm

# install desktop file (think of it as a start menu entry)
# this creates the file below for you at the right path
echo "[Desktop Entry]\nName=Simon the Sorcerer\nGenericName=simon1\nIcon=system-run\nExec=/usr/bin/scummvm -c game/configfile -p game simon1-voiceonly\nPath=/home/deck/.local/share/Steam/steamapps/common/SimonTheSorcerer/simon1-de/\nTerminal=false\nType=Application\n" | sudo tee /usr/share/applications/simon1-voiceonly.desktop

# in case you want to revert the changes:
#sudo pacman -Rns scummvm
#sudo rm /usr/share/applications/simon1-voiceonly.desktop

# close the terminal
exit

simon1-voiceonly.desktop

[Desktop Entry]
Name=Simon the Sorcerer
GenericName=simon1
Icon=system-run
Exec=/usr/bin/scummvm -c game/configfile -p game simon1-voiceonly
Path=/home/deck/.local/share/Steam/steamapps/common/SimonTheSorcerer/simon1-de/
Terminal=false
Type=Application

Use the Decky plugin Quick Launch, check "Enable Launching all Apps", then add ".desktop files" -> "Simon the Sorcerer"