Rank 1: Godot Engine
Best for a free, fully open-source engine
- Windows
- macOS
- Linux
- Web
- Android
MIT license with no fees, royalties or account. Different project structure and scripting from Unity, so projects are rebuilt rather than converted.
Top pick: Godot Engine. Switching saves about $2,310 USD a year.
$2,310 USDa year
≈$3,293.37 CAD (converted from USD)
Every pick below has a free version.
3 alternatives
The editor’s first choice for most people switching.
Best for a free, fully open-source engine
MIT license with no fees, royalties or account. Different project structure and scripting from Unity, so projects are rebuilt rather than converted.
Covers most of the same work, with trade-offs noted on each card.
Best for lightweight 2D and mobile games
Source-available under the Defold License. Free to build and sell games with no royalties; the license forbids commercializing the engine itself.
Right for specific needs, or not yet mature enough to recommend widely.
Best for Rust developers who want a code-first engine
Its README says Bevy is in the early stages of development, with breaking API changes about every three months. MIT or Apache-2.0.
Sponsor this page: $149 for 30 days. Sponsors appear above the ranking, labeled; the ranking itself is not for sale.
How each alternative covers what people use Unity for. Numbers link to editor notes.
| Feature | Godot Engine | Defold | Bevy |
|---|---|---|---|
| Editor | |||
| 2D and 3D scene editor | YesNote 1Scene and node editor with a dedicated 2D renderer | PartialNote 22D-first editor; 3D is supported but less developed | NoNote 3Code-first with no visual scene editor |
| Scripting | |||
| C# scripting | YesNote 4C# needs the separate .NET build; GDScript is the main language | NoNote 5Scripts are written in Lua; native extensions use C or C++ | NoNote 6Written in Rust |
| Publishing | |||
| Export to desktop, mobile, web and console | PartialNote 7Desktop, mobile and web are built in; console export goes through third-party porting companies | YesNote 8Desktop, iOS, Android, HTML5 and consoles; some console targets need platform-holder access | PartialNote 9Windows, macOS, Linux, mobile and web; no official console support |
| Ecosystem | |||
| Asset marketplace | PartialNote 10The in-editor Asset Library is smaller than Unity's Asset Store | PartialNote 11A community Asset Portal rather than a store | No |
| Rendering | |||
| Real-time 3D rendering pipelines | YesNote 12Forward+, Mobile and Compatibility renderers | PartialNote 13Custom render scripts; focused on 2D and simple 3D | PartialNote 14PBR renderer that is still gaining features |
| Runtime | |||
| Animation, physics and UI tools | Yes | PartialNote 15Box2D and Bullet physics, flipbook and skeletal animation | PartialNote 16Animation is built in; physics comes from community crates |
| Parity score | 83% | 50% | 25% |
Not covered by any free alternative yet: Asset marketplace. See all feature gaps
Switching saves about $2,310 USD / ≈$3,293 CAD (estimated from the USD price) a year. Prices checked ; ≈ means converted from USD.
Based on Unity Pro, per seat. Price source. USD to CAD at 1.4257 as of Oct 7, 2026.
Last verified . Ranking: tier first, then the published score.
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Unity is a product of Unity Technologies, named here for comparison only. Platforms listed for Unity: Windows, macOS, Linux.