LunarEngine (formerly Librebox) is an open-source game engine powered by Luau. It delivers a sandbox-style API and development model inspired by popular sandbox engines, so existing Luau code runs with minimal changes.
Unity Alternatives
The best alternative to Unity is Godot Engine, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Unity and many of them are so hopefully you can find a suitable replacement. Other interesting alternatives to Unity are Unreal Engine, Redot Engine, CRYENGINE and Bevy Game Engine.
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Most Unity alternatives are Game Development Tools, but you can also narrow the list to IDEs or Programming Languages. Other popular filters are 3D Game Engine, Linux, Open Source, Online and Free. You can also filter for EU-based alternatives if you prefer software from the European Union.
Alternatives list
Cost / License
- Free
- Open Source (MIT)
Since
- Since 2025
Free online 3D Game Maker. Make your own 3D games online! Create Games for Web, Mobile and Desktop. Easy to use.
- Global
+2
A game engine written in Python, extending support across multiple GPU devices with 3D rendering, PBR Renderer and much more.
Cost / License
- Free
- Open Source (Apache-2.0)
Since
- Since 2024
Welcome to GameGuru, the easy game maker. Our mission is to create the easiest and most enjoyable game creator. Join us and our great & enthusiastic community on this journey.
United Kingdom
Cave Engine is a Simple, easy to use, 3D desktop Game Engine that is scriptable in Python.
Cost / License
- Paid
- Proprietary
Since
- Since 2023
Brazil
Limon is a multi platform 3D game engine mainly focusing on first person games. Focus of its development is ease of use and ease of study. It has builtin editor for maps, animations and GUIs.
Cost / License
- Free
- Open Source (LGPL-3.0)
Since
- Since 2018
United States
