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.
Polly2D Alternatives
Polly2D is described as 'Polly makes it easy to get started with C++ 2D game development using a clean, modern API' and is a game development tool in the development category. There are more than 10 alternatives to Polly2D for a variety of platforms, including Windows, Linux, Mac, Haiku and BSD apps. The best Polly2D alternative is Godot Engine, which is both free and Open Source. Other great apps like Polly2D are Unity, Unreal Engine, LÖVE and Bevy Game Engine.