Overview

DarkRadiant combines general map editing with tools for materials, models and game-specific mission work. It imports classic Quake and idTech map formats and exports to Doom 3, Quake 4 and Quake 3 formats, making it useful across several related games rather than only one target. Its stated aim is to serve The Dark Mod fan-mission community, and that focus is clearest in its dedicated mission editors.

The key prerequisite is access to game resources: DarkRadiant does not install them, so users must point the editor to a supported game before they can edit maps. That makes it a practical choice for modders with an existing game setup, not for someone looking for a self-contained level-design environment.

Key features

Core editing tools include a media browser, surface, patch and light inspectors, plus layers, grouping and selection sets. These give designers ways to manage scene elements and inspect common map components without relying solely on broad, general-purpose controls.

For asset work, the editor provides model and skin browsers, model scaling, UV editing and a particle editor with real-time preview. Those capabilities make it more than a map-layout tool, though they remain tied to supported game formats and resources.

The Dark Mod receives a deeper set of specialised tools: Stim/Response, Objectives, Difficulty and Conversation editors, along with AI and Readable tools. This is the strongest reason for fan-mission creators to choose DarkRadiant over a general editor. A Python script interface adds scope for scripting, while the FAQ says other Doom 3 modifications can be used by setting fs_game in preferences.

DarkRadiant supports 3D level dimensions, entity placement, prefab or template tools and archive extraction. Its supported formats include MAP, PK4, ASE, LWO, OBJ, PFB and PROC.

Pricing

DarkRadiant: 0.00 USD per free — an open-source level editor. There is no paid plan or free trial; the editor itself is free, but users must supply game resources because they are not installed with it.

Platforms

DarkRadiant supports Windows, Linux and macOS. Version 3.9.0 is dated 2024-03-31; the download page provides Windows installer and portable downloads, as well as Linux distribution options. The FAQ says the software compiles on macOS but is not fully tested there, so macOS users should expect less assurance than users on the other supported platforms.

Who it's for

DarkRadiant is best suited to Doom 3 and The Dark Mod level designers, especially fan-mission creators who can provide the required game files. Its game-specific editors make it a strong fit for building and configuring The Dark Mod missions. It is a weaker fit for newcomers who need the editor to provide game assets, or for designers working outside its supported game and map formats.

The project directs users to The Dark Mod forums for discussion and its bugtracker for issue reports. The maker makes no security or compliance claims.

Pros and cons

Pros

Free and open source, with no paid tier to work around.
Dedicated The Dark Mod mission tools cover objectives, conversations, difficulty, AI and other game-specific tasks.
Imports classic Quake/idTech maps and exports to Doom 3, Quake 4 and Quake 3 formats.
Includes asset and editing tools such as UV editing, particle previews, layers and selection sets.

Cons

Users must provide supported game resources themselves, so the editor cannot be used as a self-contained starting point.
macOS builds are not fully tested, making that platform a less certain choice.
Its focus on supported games and formats limits its appeal to creators working in unrelated engines or workflows.

Alternatives

NetRadiant-Custom is another free, open-source level editor with ready-to-use packages in its Releases; consider it when that package-based distribution better suits your setup.
OpenMW-CS is a free, open-source construction set for the OpenMW game engine, making it a more relevant option for work in that engine.
Chunker is a free, open-source game-modding tool; consider it when you want a tool described by its maker as an internal tool offered to users.
Minecraft Launcher is free to download, but access to games requires ownership or a time-limited demo; choose it for launching Minecraft rather than editing DarkRadiant-supported maps.
QuickBMS is a free, open-source, multiplatform tool; consider it when that tool is the better match for your modding task.
Reloaded-II is free with no paid plans or usage limits stated on its opened pages; consider it when you need that alternative instead of a level editor.
UAssetGUI is free MIT-licensed software for Linux and Windows; consider it when that platform and licensing combination fits your needs.
WolvenKit is free, GPL-3.0 open-source software for research and educational use; consider it when those terms suit your work.

Browse Game Level Editors or Game Modding Tools for more options.

Verdict

Choose DarkRadiant if you create Doom 3 or The Dark Mod maps and can provide the game resources it needs. Its no-cost, open-source access and specialised fan-mission tools make it a focused choice for that work. Look elsewhere if you need a self-contained editor, dependable macOS testing, or support for games outside its formats and focus.

	DarkRadiant	PixLab Tilemap Editor
Free plan	Yes	Yes
Free trial	No	No
Paid from	Free	Free
Platforms	Linux, macOS, Windows	Web
Free plan	Yes	Yes
Level dimensions	3d	2d
Entity placement	Yes	Yes
Prefab or template tools	Yes
Archive extraction	Yes
Supported formats	MAP, PK4, ASE, LWO, OBJ, PFB, PROC
Supported platforms	Windows, Linux, macOS
Tilemap tools		Yes

DarkRadiant vs PixLab Tilemap Editor

DarkRadiant

PixLab Tilemap Editor