Open-source alternatives to Unity

2D and 3D game engine with a full editor — Godot Engine – Multi-platform 2D and 3D game engine

↔ alternative to Unity、Unreal Engine

No-code 2D/3D game development engine — 🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.

↔ alternative to Construct 3、GameMaker、Unity

Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions of developers across the globe. Its core has evolved to serve as the foundation for Cocos Creator 1.x & 2.x.

↔ alternative to Unity

CLI toolset for Unity assets and asset bundles — An experimental toolset for Unity asset and asset bundle files.

↔ alternative to Unity

Blender-integrated game engine and editor — UPBGE, the best integrated game engine in Blender

↔ alternative to Unity、Unreal Engine

2D game engine for building games — A completely free, open-source, 2D game engine built on proven torque technology.

↔ alternative to Unity

Open-source 3D game engine with Vulkan and D3D12 — AnKi 3D Engine - Vulkan and D3D12, modern renderer, scripting, physics and more

↔ alternative to Unity、Unreal Engine

Open source C# 3D game engine — An Open Source C# 3D Game Engine under MIT license, inspired by Unity and featuring a complete editor

↔ alternative to Unity

Cross-platform 2D/3D game engine with visual editor — Cross-platform (desktop, mobile, console, web) 3D and 2D game engine. Powerful visual editor. Support for glTF, X3D, IFC and more. Fast clean code using modern Pascal. Free and open-source.

↔ alternative to Unity

Modern free C++ game engine with Vulkan support — Nebula is an open-source and free-to-use modern C++ game engine.

↔ alternative to Unity