Top 12 Open-Source Alternatives to Unity3D

Unity3D

Unity is the ultimate game development platform. Use Unity to build high-quality 3D and 2D games, deploy them across mobile, desktop, VR/AR, consoles or the Web, and connect with loyal and enthusiastic players and customers.

Product categories

2D Game Engine 3D Game Engine Developer Tools Game Development Game Engine Virtual Reality

Summary

The top open-source alternatives to Unity3D are Godot Engine, Unity, and Defold Engine. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Godot Engine Landing Page
1

Godot Engine

Feature-packed 2D and 3D open source game engine.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 446 social mentions
Unity Landing Page
2

Unity

The multiplatform game creation tools for everyone.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 197 social mentions
Defold Engine Landing Page
3

Defold Engine

Defold lets you quickly build high performing, cross-platform games together with your team.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 47 social mentions
LibGDX Landing Page
4

LibGDX

Libgdx is a Java game development framework that provides a unified API that works across all...
Pricing:
- Open Source
#Game Engine #Game Development #3D Game Engine 6 social mentions
ct.js Landing Page
5

ct.js

ct.js is a 2D game editor (desktop app) based on web technologies.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 3 social mentions
MonoGame Landing Page
6

MonoGame

MonoGame is an open source implementation of the Microsoft XNA 4 Framework.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 2 social mentions
Cocos Creator Landing Page
7

Cocos Creator

Cocos Creator is more than a efficient, lightweight, free, open-source, cross-platform graphics engine: it's also a platform to create 3D content in real time.
Pricing:
- Open Source
#Game Engine #Game Development #3D Game Engine
JMonkeyEngine Landing Page
8

JMonkeyEngine

What is jMonkeyEngine? It's a free, open source game engine, made especially for Java game developers who want to create 3D games using modern technology.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 23 social mentions
CryENGINE Landing Page
9

CryENGINE

The most powerful game development platform is now available to everyone. Full engine source code.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine
GDevelop Landing Page
10

GDevelop

GDevelop is an open-source game making software designed to be used by everyone.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 75 social mentions
Orx Landing Page
11

Orx

Orx - a portable open source game engine
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine
Panda3D Landing Page
12

Panda3D

Panda3D is a video game development engine and rendering software. It is developed and maintained by the Carnegie Mellon University Entertainment Technology Center.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 1 social mentions