A cross platform Lua based game engine
3D playground built on three.js and cannon.js
KlayGE is a cross-platform open source game engine
Cross-platform 2D and 3D game engine
A cross-platform 2D game engine
Clojure in Unity
A fast, scalable, distributed game server engine/framework for C++
Planimeter Game Engine 2D - LÖVE-based game engine for Lua
Low-Level Game Engine for Retro Platforms
Blueshift is a cross-platform 3D game engine implemented in C++
Portable game engine with main focus on point-and-click adventures
Web powered cross-platform 3D, WebXR game engine
A project to create a blazingly fast Swift game engine
Game engine for playing tomb raider 1 - 5 levels.
3D graphics engine. Little progress; project cancelled.
scriptable game engine with built-in support for 2D graphics and sound
Intrinsic is a Vulkan based cross-platform game and rendering engine
Contains Games,Software, and Game engine products in it.
The Atomic Game Engine is a multi-platform 2D and 3D engine
An Adventure Game Engine
A 2d physics game engine for JavaFX