Tool profile
Defold: cost, fit and limits
Defold is a free game engine and editor maintained by the Defold Foundation that lets teams write game logic in Lua and publish 2D and light 3D games to mobile, desktop, web and console platforms from a single code base.
What to know first
Defold is free forever with no registration, under a license derived from Apache 2.0, and the foundation offers technical support contracts without publishing prices. The about page says the foundation has no employees and contracts product work to Refold AB, which is useful context for anyone judging long-term support. The pages we read name no AI feature, so any assistant would come from outside tools.
Defold at a glance
| Maker | Stiftelsen Defold Foundation, Sweden |
|---|---|
| Free plan | Yes |
| Entry price | Free |
| API access | Yes |
| Category | Best AI Game Engines in 2026, rank 5 of 12 |
| Website | defold.com/ |
Who Defold is best for
Small teams shipping to many platforms
One code base publishes to all major platforms, and Xbox is supported from Defold 1.14.0, which cuts the cost of maintaining separate builds for each target.
Lua programmers who want a debugger
Game logic is written in Lua and the editor includes a built-in debugger, which suits developers who prefer a small scripting language and quick iteration.
Studios that need platform-specific code
Native extensions let a team call platform code from Lua game logic, so a project can reach device features without forking the engine itself.
Defold plans and pricing
| Plan | Price | What it includes |
|---|---|---|
| Defold (free) | Free | Editor, engine, build pipeline and tools, free forever under the Defold License derived from Apache 2.0, with no registration needed to download. |
| Technical support contract | Not published on the pages read | The homepage says support contracts are available if needed, but it lists no price, scope or response times for them. |
Checked November 2026.
What Defold does
- Built-in editors
- Visual, code, scene, particle effect and tilemap editors are included in the download, so a new project starts without extra setup, plugins or a separate level design tool.
- Lua with a debugger
- Game logic is written in Lua, and a built-in debugger lets developers inspect running code inside the editor, which shortens the loop between writing a script and finding a bug.
- Editor scripts
- Editor scripts and a customizable interface let a team change the workflow, for example to automate repetitive asset steps or add project-specific commands to the editor.
- Wide publishing
- Publishing covers all major platforms from one code base, and Microsoft Xbox is supported from Defold 1.14.0, although the page says it is free only for approved Xbox developers.
- Native extensions
- Native extensions add platform code to Lua game logic, which extends what the engine can do on a device without needing to modify the engine source in a fork.
How Defold handles your data
The services privacy policy says personal data is kept as long as needed for the purposes it was collected for or to provide the services, and possibly after an account is closed. It also says data may be stored outside the EEA and names no specific region. The pages we read gave no certifications and did not say whether any data trains AI models, so the vendor's policy was not checked for those points.
Where Defold falls short in practice
- Xbox access conditions. Xbox support is free only for approved Xbox developers, so a team that is outside that program cannot count on console access just because the engine lists the platform.
- Four editor languages. The editor is localized in English, Russian, Chinese and Portuguese only, which limits comfort for team members who work in other languages and for classroom use elsewhere.
- A foundation without staff. The Defold Foundation has no employees and contracts product work to Refold AB, so engine capacity and support response depend on that arrangement and on any support contract you sign.
Alternatives to Defold
Defold: common questions
Is Defold really free for commercial work?
Yes. The homepage says Defold is free forever with no registration required, and the editor is downloaded directly. The license is derived from Apache 2.0. Technical support contracts are sold separately, and the pages we read published no price for them, so ask the foundation for terms.
What programming language does Defold use?
Game logic is written in Lua, with a built-in debugger in the editor. Native extensions let teams add platform code and editor scripts customize the workflow. Developers who prefer C# or C++ for game logic would need to look at engines that support those languages directly.
Does Defold support console platforms?
The homepage lists publishing to all major platforms and states that Microsoft Xbox support arrived in Defold 1.14.0. Xbox support is free only for approved Xbox developers. We did not check the other consoles, so confirm each platform's requirements before you plan a release.
Does Defold include AI features?
The vendor pages we read name no AI feature. Teams that use outside coding assistants can still work with Defold's Lua scripts and project files, since both are plain text. We did not test any assistant, so try a small project first and check that it understands Defold's file formats.
Who is behind Defold and where is it based?
The about page names the Stiftelsen Defold Foundation as the maker and says it has no employees, with product work contracted to Refold AB. The pages we read give a Swedish base. Check the support contract terms if your studio needs guaranteed response times.