GtkRadiant is an open-source, cross-platform level editor for id Tech based games. It comes with some map compilers and data authoring tools.

Ready-to-use GtkRadiant packages are available on the Downloads page on GtkRadiant's website. Some installation instruction may be useful.

• GtkRadiant website
• Documentation

GtkRadiant provides level editing support for Quake, Quake2, Quake2 Re-Release, Quake III Arena, QuakeLive, Quetoo, Return to Castle Wolfenstein, Star Trek Voyager: Elite Force, Star Wars Jedi Knight: Jedi Academy, Unvanquished, Urban Terror, Wolfenstein: Enemy Territory.

You can find more complete instructions to build on Windows here and to build on Mac OS here.

The Linux version is developed and distributed via Flatpak. See GtkRadiant on Flathub.

Building locally on Arch is the only setup that's likely to work as it's my daily driver. Ubuntu, Fedora etc. you are on your own. See the Flatpak SDK section below.

# ArchLinux
pacman -S git scons libxml2 gtk2 freeglut gtkglext subversion libjpeg-turbo

# get the source
git clone "https://github.com/TTimo/GtkRadiant.git"
# enter the source tree
cd GtkRadiant
# build everything
scons

You can build a specific part like this:

# only build the GtkRadiant level editor
scons target="radiant"
# only build the q3map2 map compiler and the q3data tool
scons target="q3map2,q3data"

Level editor binary (radiant) and tools (like q3map2) will be found in install/ directory. The build process automatically fetches gamepacks.

# get the flatpak manifest
git clone "https://github.com/flathub/io.github.TTimo.GtkRadiant.git"
# use flatpak-builder
cd io.github.TTimo.GtkRadiant
flatpak-builder --force-clean --user --install gtkradiant io.github.TTimo.GtkRadiant.json

You can also checkout the GtkRadiant tree locally and modify the manifest to point to it.

Here is what you can do for debugging:

flatpak run --command=sh --devel io.github.TTimo.GtkRadiant
gdb /app/gtkradiant/radiant.bin

The #radiant channel at QuakeNet is the official GtkRadiant IRC channel. Come and chat about level design, development or bugs, you're welcome. Bugs can be submitted on the GitHub issue tracker.

GtkRadiant source code is copyrighted by id Software, Inc and various contributors and protected by the General Public License v2.