Unreal Engine AlternativesOnly Open Source apps categorised as Game Development Tools

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

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Unreal Engine alternatives are mainly Game Development Tools, but if you're looking for 3D Modelers or Role-playing Games you can filter on that. Other popular filters include Free, Raspberry Pi, Open Source 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 Unreal Engine.
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Alternatives list

  1. Godot Engine icon

    Godot Engine

     592 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.

    178 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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    5
    Comments about Godot Engine as an Alternative to Unreal Engine
    Top Positive Comment
    Guest
    13

    Open source, powerful, same render tech in 3.0, and did i mentioned open source and easy and open source?

    Review by a new / low-activity user.
    Mino Developer
    Positive
    0

    Not the best in 3d graphics, but definitely an awesome engine for beguiners and those who don't have a very good PC.

    Sebastian Skinnari
    Positive
    1

    Best FOSS Game Engine right now, both 2D and 3D capable.

    Review by a new / low-activity user.
    3 of 5 comments
    Godot Engine icon
    Godot Engine icon
    • Godot Engine is Free and Open SourceUnreal Engine is Freemium and Proprietary
    • Godot Engine is LightweightUnreal Engine is not according to our users
  2. 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.

    121 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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    2
    Comments about GDevelop as an Alternative to Unreal Engine
    Michael
    Negative
    3

    Allows for creating 2D games only.

    Guest
    Positive
    0

    simple visual code despite the fact that it is only 2D

    Review by a new / low-activity user.
    GDevelop icon
    GDevelop icon
    • GDevelop is Freemium and Open SourceUnreal Engine is Freemium and Proprietary
    • GDevelop is LightweightUnreal Engine is not according to our users
  4. 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.

    64 Redot Engine alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Redot Engine screenshot 1
     
  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.

    46 Armory 3D alternatives

    Cost / License

    • Free
    • Open Source (Zlib)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Blender
    Armory 3D screenshot 1
     
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    2
    Comments about Armory 3D as an Alternative to Unreal Engine
    Guest
    Positive
    0

    it looks and feel very similar

    Review by a new / low-activity user.
    Guest
    Positive
    0

    It is great, BUT it is not designed to be realistic. If you want to make a semi-realistic 3D game it is GREAT!

    Review by a new / low-activity user.
    Armory 3D icon
    Armory 3D icon
    • Armory 3D is Free and Open SourceUnreal Engine is Freemium and Proprietary
  7. 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
     
  10. Open 3D Engine icon

    Open 3D Engine

     23 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.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Windows
    • Linux
    Open 3D Engine screenshot 1
     
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    3
    Comments about Open 3D Engine as an Alternative to Unreal Engine
    Mino Developer
    Positive
    0

    You may need a beautiful PC to run it smoothely.

    Guest
    Positive
    1

    You can make AAA quality games in it.

    Review by a new / low-activity user.
    Lester Covax
    Positive
    0

    Based on CryEngine, and loaded with integrations to AWS/web services, this is a great option for those looking to create an online multiplayer game with the nuts and bolts already handled.

    Open 3D Engine icon
    Open 3D Engine icon
    • Open 3D Engine is Free and Open SourceUnreal Engine is Freemium and Proprietary
  11. PlayCanvas icon

    PlayCanvas

     14 likes

    PlayCanvas is the world’s easiest to use WebGL Game Engine. It’s free, it’s open source and it’s backed by amazing developer tools.

    43 PlayCanvas alternatives

    Cost / License

    • Freemium
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    PlayCanvas screenshot 1
     
  12. Torque 3D icon

    Torque 3D

     46 likes

    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
     
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    1
    Comments about Torque 3D as an Alternative to Unreal Engine
    Mino Developer
    Negative
    0

    Torque 3d is more like a game than an engine. Also, it is hard to use.

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

    UPBGE

     10 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
     
  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 46 Unreal Engine alternatives