Solar2D Game Engine main repository (ex Corona SDK)
The Ren'Py Visual Novel Engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
A fresh & lightweight javascript game engine
The HTML5 Creation Engine
A completely free, open-source, 2D game engine
Open source library for creative expression on the web, desktop, etc.
Here we're trying to create the easiest open-source game engine.
A 2D rigid body physics engine for the web
A Tile-based Game Engine written in C# mimicing retro consoles.
Javascript library for making tile based games
Amazon Lumberyard is a free AAA game engine
Real-time RPG for PC/tablet/phone; multiple quests and random dungeons
Turbulenz is a modular 3D and 2D game framework
Free Android 2D OpenGL Game Engine