The Best Open Source Unity AlternativesTop Game Development Tools and other similar apps like Unity

The best open source alternative to Unity is Godot Engine. If that doesn't suit you, our users have ranked more than 100 alternatives to Unity and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Unity are Stride Game Engine, GDevelop, Armory 3D and Redot Engine.

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Unity alternatives are mainly Game Development Tools, but if you're looking for Role-playing Games or 3D Modelers you can filter on that. Other popular filters include Windows + Open Source, Linux, Open Source, Online, Free and Android. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Unity.
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Alternatives list

  1. Godot Engine icon

    Godot Engine

     596 likes

    Godot Engine is a feature-packed, cross-platform game engine to create 2D and 3D games from a unified interface. It provides a comprehensive set of common tools, so that users can focus on making games without having to reinvent the wheel.

    180 Godot Engine alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • Epic Games Store
    • Flathub
    • F-Droid
    • Haiku
    • Steam
    • FreeBSD
    • Flatpak
    • itch.io
    • Meta Quest
    Godot Engine screenshot 1
     
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    20
    Godot Engine vs Unity Comments
    Top Positive Comment
    kurifoxen
    2

    Its sopen source with no fees

    carotte
    Positive
    0

    Godot is free, both as in freedom and free of charge. Unity is neither.

    Federico Cangiotti
    Positive
    0

    It's FOSS, lightweight and under intense development, great tool even for beginners.

    3 of 20 comments
    • Godot Engine is Free and Open SourceUnity is Freemium and Proprietary
    • Godot Engine is LightweightUnity is not according to our users
  2. Stride Game Engine icon

    Stride Game Engine

     34 likes

    Stride (formerly Xenko) is an open-source C# game engine designed for the future of gaming. It comes with a full toolchain and is especially well suited to create realistic games but allows you much more!.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Windows
    Overview
     
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    2
    Stride Game Engine vs Unity Comments
    tvgoing1
    Positive
    2

    It offers C# and better options for 3D artist.

    Guest
    Positive
    0

    It's more open, I can look under the hood ans see how things work. It's C# all the way down and performance is still great.

    Review by a new / low-activity user.
    • Stride Game Engine is Free and Open SourceUnity is Freemium and Proprietary
  4. GDevelop icon

    GDevelop

     193 likes

    GDevelop is an open-source game making software designed to be used by everyone. Any kind of 2D games can be created with it and no programming skills are required to get started. Logic of games are made using visual events.

    122 GDevelop alternatives

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Flathub
    The new editor interface, which now supports 3D editing.
     
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    4
    GDevelop vs Unity Comments
    Guest
    Negative
    6

    GDevelop is a 2D game engine based in visual programming and very limited in that aspect.

    Review by a new / low-activity user.
    kayl
    Negative
    1

    GDevelop --> 2D Unity --> 3D/2D

    DeeJayLSP
    Negative
    0

    GDevelop is more like a Construct alternative than an Unity one.

    3 of 4 comments
    • GDevelop is Freemium and Open SourceUnity is Freemium and Proprietary
    • GDevelop is LightweightUnity is not according to our users
  5. Armory 3D icon

    Armory 3D

     33 likes

    Armory is an open-source 3D game engine with full Blender integration, turning it into a complete game development tool. The result is a unified workflow from start to finish, making you work faster. No more jumping between different applications.

    Cost / License

    • Free
    • Open Source (Zlib)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Blender
    Armory 3D screenshot 1
     
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    1
    Armory 3D vs Unity Comments
    lemin-creation
    Positive
    0

    Fully integrated to last builds of Blender 3d, very powerful, and multiplatform ;

    • Armory 3D is Free and Open SourceUnity is Freemium and Proprietary
  6. Redot Engine icon

    Redot Engine

     18 likes

    Redot Engine is a feature-packed, cross-platform fork of the Godot game engine to create 2D and 3D games from a unified interface. It provides a comprehensive set of common tools, so that users can focus on making games without having to reinvent the wheel.

    65 Redot Engine alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Redot Engine screenshot 1
     
  9. Candlestick icon

    Candlestick

     6 likes

    Open-source editor runs in browser for making games, animations, and interactive content, offering vector drawing, timeline tools, asset import/export, JavaScript scripting, onion-skinning, plug-ins, and no installation or feature restrictions required.

    62 Candlestick alternatives

    Cost / License

    Application types

    Platforms

    • Online
    Candlestick screenshot 1
     
  10. Fibbo icon

    Fibbo

     15 likes

    Fibbo is a free and open-source web-based game engine that allows you to create interactive experiences using JavaScript, right in your browser.

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • JavaScript
    • Typescript
    • npm
    Fibbo screenshot 1
     
  12. UPBGE icon

    UPBGE

     11 likes

    A extremely powerful application to make games in python as well as in visual programming

    133 UPBGE alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Blender
    UPBGE screenshot 1
     
    |
    1
    UPBGE vs Unity Comments
    lemin-creation
    Positive
    1

    Easy to use. Integrated with EEvee render. Free.Very powerful. All-in-one package solution;

    • UPBGE is Free and Open SourceUnity is Freemium and Proprietary
  13. Open 3D Engine icon

    Open 3D Engine

     24 likes

    Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations without any fees or commercial obligations.

    111 Open 3D Engine alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Windows
    • Linux
    Open 3D Engine screenshot 1
     
  14. Urho3D icon

    Urho3D

     43 likes

    Urho3D is a lightweight, cross-platform rendering and game engine implemented in C++ and released under the MIT license. Greatly inspired by OGRE and Horde3D.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Raspberry Pi
    Urho3D screenshot 1
     
12 of 83 Unity alternatives