Solar2D Game Engine main repository (ex Corona SDK)
Magic Another Game Engine
LayaAir is an open-source 2D/3D engine
An easy to use 2D HTML5 game engine written in TypeScript
Embeddable unity game engine view for Flutter
Portable version of the incredible Godot Game Engine
Free and Open Game Programming Language for Windows and GNU/Linux
Jetpac Clone, written in JavaScript, wrapped in a Mac App
A complete 2D Game Engine with built in drag and drop editor