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, Candlestick and Armory 3D.

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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, Online, Open Source, 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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Unity alternatives page was last updated Feb 18, 2026

Godot Engine
605 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.
181 Godot Engine alternatives
Cost / License
Free
Open Source (MIT)
Application type
Game Development
Origin
Argentina
Platforms
Mac
Windows
Linux
Online
Android
Epic Games Store
Flathub
F-Droid
Haiku
Steam
FreeBSD
Flatpak
itch.io
Meta Quest
+6
Is Godot Engine a good alternative to Unity?

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20comments
Godot Engine vs Unity Comments

Top Positive Comment
kurifoxen
Sep 21, 2023
2
Its sopen source with no fees
carotte
Positive commentOct 6, 2024
0
Godot is free, both as in freedom and free of charge. Unity is neither.
Federico Cangiotti
Positive commentSep 26, 2023
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
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
Game Development
Origin
Japan
Platforms
Windows
+4
Is Stride Game Engine a good alternative to Unity?

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2comments
Stride Game Engine vs Unity Comments

tvgoing1
Positive commentDec 8, 2016
2
It offers C# and better options for 3D artist.
Guest
Positive commentSep 16, 2023
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
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.
123 GDevelop alternatives
Cost / License
Freemium
Open Source
Application type
Game Development
Origin
France
EU
Platforms
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
iPad
Flathub
+4
Is GDevelop a good alternative to Unity?

|
4comments
GDevelop vs Unity Comments

Guest
Negative commentMar 9, 2018
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 commentNov 2, 2015
1
GDevelop --> 2D Unity --> 3D/2D
DeeJayLSP
Negative commentJul 17, 2020
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
Candlestick
13 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.
63 Candlestick alternatives
Cost / License
Free
Open Source (GPL-3.0)
Application types
Game Development
Animation Maker
Origin
International
Platforms
Online
Is Candlestick a good alternative to Unity?
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
Game Development
Platforms
Mac
Windows
Linux
Blender
+4
Is Armory 3D a good alternative to Unity?

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1comment
Armory 3D vs Unity Comments

lemin-creation
Positive commentSep 20, 2023
0
Fully integrated to last builds of Blender 3d, very powerful, and multiplatform ;
Armory 3D is Free and Open SourceUnity is Freemium and Proprietary
Redot Engine
20 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.
Cost / License
Free
Open Source (MIT)
Application type
Game Development
Platforms
Mac
Windows
Linux
Is Redot Engine a good alternative to Unity?
microStudio
22 likes
microStudio is a free game engine online. Create games, learn programming, play, share, prototype and jam!.
175 microStudio alternatives
Cost / License
Free
Open Source (MIT)
Application type
Game Development
Origin
France
EU
Platforms
Mac
Windows
Linux
Online
Raspberry Pi
+2
Is microStudio a good alternative to Unity?
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.
58 Fibbo alternatives
Cost / License
Free
Open Source (Apache-2.0)
Application type
Game Development
Origin
International
Platforms
Self-Hosted
JavaScript
Typescript
npm
Is Fibbo a good alternative to Unity?
Bevy Game Engine
22 likes
A refreshingly simple data-driven game engine built in Rust. Free and Open Source Forever!
Cost / License
Free
Open Source (Apache-2.0)
Application type
Game Development
Platforms
Mac
Windows
Linux
Is Bevy Game Engine a good alternative to Unity?
UPBGE
11 likes
A extremely powerful application to make games in python as well as in visual programming
Cost / License
Free
Open Source
Application type
Game Development
Platforms
Mac
Windows
Linux
Flathub
Blender
Is UPBGE a good alternative to Unity?

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1comment
UPBGE vs Unity Comments

lemin-creation
Positive commentSep 20, 2023
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
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.
Cost / License
Free
Open Source
Application type
Game Development
Origin
United States
Platforms
Windows
Linux
Is Open 3D Engine a good alternative to Unity?
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
Game Development
Origin
Finland
EU
Alerts
Discontinued
Platforms
Mac
Windows
Linux
Android
iPhone
Raspberry Pi
+3
Is Urho3D a good alternative to Unity?

12 of 84 Unity alternatives

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

Alternatives list

Godot Engine

Cost / License

Application type

Origin

Platforms

Godot Engine vs Unity Comments

Stride Game Engine

Cost / License

Application type

Origin

Platforms

Stride Game Engine vs Unity Comments

GDevelop

Cost / License

Application type

Origin

Platforms

GDevelop vs Unity Comments

Candlestick

Cost / License

Application types

Origin

Platforms

Armory 3D

Cost / License

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Platforms

Armory 3D vs Unity Comments

Redot Engine

Cost / License

Application type

Platforms

microStudio

Cost / License

Application type

Origin

Platforms

Fibbo

Cost / License

Application type

Origin

Platforms

Bevy Game Engine

Cost / License

Application type

Platforms

UPBGE

Cost / License

Application type

Platforms

UPBGE vs Unity Comments

Open 3D Engine

Cost / License

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Origin

Platforms

Urho3D

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Origin

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