Open Source Unity Alternatives for Windows

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

filter to find the best alternatives

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

     587 likes
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    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.

    178 Godot Engine alternatives

    Cost / License

    • Free
    • Open Source

    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
    221
    Comments about Godot Engine as an Alternative to Unity
    Comment summary: Godot Engine is praised for being free, open-source, and easy to use, making it more accessible, especially for beginners. It is appreciated for its lightweight nature, support for multiple platforms, and strong community involvement. Conversely, users point out it lacks advanced features in 3D compared to Unity and has issues with code editors for some languages. The upcoming development promises significant improvements, possibly narrowing the gap with Unity.
    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.

    Show more comments
    3 of 20 comments
    Unity Icon
    Godot Engine icon

    • Almost everyone thinks Godot Engine is a great Unity alternative.

    • Godot Engine is the most popular Web-based, Windows, Android & Mac alternative to Unity.

    • Godot Engine is the most popular Open Source & free alternative to Unity.

    • 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
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    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!.

    64 Stride Game Engine alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Windows
    Overview
     
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    13
    Comments about Stride Game Engine as an Alternative to Unity
    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.
    Unity Icon
    Stride Game Engine icon

    • Almost everyone thinks Stride Game Engine is a great Unity alternative.

    • Stride Game Engine is Free and Open SourceUnity is Freemium and Proprietary
  4. GDevelop icon

    GDevelop

     193 likes
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    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.

    121 GDevelop alternatives

    Cost / License

    • Freemium (Subscription)
    • 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
    24
    Comments about GDevelop as an Alternative to Unity
    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.

    Show more comments
    3 of 4 comments
    Unity Icon
    GDevelop icon

    • Most users think GDevelop is a great Unity alternative.

    • GDevelop is the most popular iPhone, iPad & Android Tablet alternative to Unity.

    • 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
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    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.

    46 Armory 3D alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Blender
    Armory 3D screenshot 1
     
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    1
    Comments about Armory 3D as an Alternative to Unity
    lemin-creation
    Positive
    0

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

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

    Redot Engine

     16 likes
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    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.

    64 Redot Engine alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Redot Engine screenshot 1
     
  10. Urho3D icon

    Urho3D

     43 likes
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    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.

    82 Urho3D alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Raspberry Pi
    Urho3D screenshot 1
     
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    11
  11. ct.js icon

    ct.js

     29 likes
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    ct.js is a 2D game editor (desktop app) based on web technologies. It aims to be an extensible yet simple game-making tool, accessible for both newbies and experienced game developers.

    50 ct.js alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Room editor
     
  12. Open 3D Engine icon

    Open 3D Engine

     23 likes
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    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.

    110 Open 3D Engine alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Windows
    • Linux
    Open 3D Engine screenshot 1
     
  13. UPBGE icon

    UPBGE

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

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Blender
    UPBGE screenshot 1
     
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    1
    Comments about UPBGE as an Alternative to Unity
    lemin-creation
    Positive
    1

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

    Unity Icon
    UPBGE icon
    • UPBGE is Free and Open SourceUnity is Freemium and Proprietary
  14. Torque 3D icon

    Torque 3D

     46 likes
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    Torque 3D is a easy-to-use game creation platform. Architected from the ground up for maximum flexibility and performance across a wide range of hardware and built upon the Frontline award-winning Torque Game Engine Advanced, Torque 3D comes equipped with a full suite of tools...

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Windows
    • Linux
    Torque 3D screenshot 1
     
12 of 70 Unity alternatives