LunarEngine icon
LunarEngine icon

LunarEngine

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.

LunarEngine screenshot 1

Cost / License

  • Free
  • Open Source (MIT)

Alerts

  • Discontinued

Platforms

  • Windows
LunarEngine alternatives  
Discontinued

The GitHub repository was archived in November 2025.

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Features

  1.  3D Game Engine

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LunarEngine information

LunarEngine was added to AlternativeTo by Paul on and this page was last updated . LunarEngine is sometimes referred to as Librebox. 
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What is LunarEngine?

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.

Why Lunar?

Lunar gives developers full agency over their games - from the code to the engine. Build immersive experiences with a familiar interface while maintaining complete ownership of your platform.