This Flatpak is available on Flathub. After following the Flatpak setup guide, you can install it by entering the following command in a terminal:

flatpak install --user flathub org.godotengine.Godot3 -y

Once the Flatpak is installed, you can run Godot using your desktop environment's application launcher.

Looking to package a Godot project as a Flatpak ? See flathub/org.godotengine.godot.BaseApp.

This Flatpak follows the latest stable Godot version. To update it, run the following command in a terminal:

flatpak update

This version of Godot is built with special permissions to be able to run commands on the host system outside of the sandbox via flatpak-spawn. This is done by prefixing the command with flatpak-spawn --host. For example, if you want to run gnome-terminal on the host system outside of the sandbox, you can do so by running flatpak-spawn --host gnome-terminal.

To spawn an external editor in Godot, all command line arguments must be split from the commands path in the external editor preferences and because the command needs to be prefixed with "flatpak-spawn --host", the Exec Path is replaced by flatpak-spawn and the Exec Flags are prefixed by --host [command path].

For example, for Visual Studio Code, where your external editor preferences would normally look like this...

Exec Path:  code
Exec Flags: --reuse-window {project} --goto {file}:{line}:{col}

...it should look like this inside the Flatpak sandbox:

Exec Path:  flatpak-spawn
Exec Flags: --host code --reuse-window {project} --goto {file}:{line}:{col}

• For C#/Mono support, install org.godotengine.Godot3Sharp instead.

Install Git, follow the flatpak-builder setup guide then enter the following commands in a terminal:

git clone --recursive https://github.com/flathub/org.godotengine.Godot3.git
cd org.godotengine.Godot3/
flatpak install --user flathub org.freedesktop.Sdk//22.08 -y
flatpak-builder --force-clean --install --user -y builddir org.godotengine.Godot3.yaml

If all goes well, the Flatpak will be installed after building. You can then run it using your desktop environment's application launcher.

You can speed up incremental builds by installing ccache and specifying --ccache in the flatpak-builder command line (before builddir).