Godot is a powerful cross-platform game engine
Open source HTML5 game framework that offers WebGL and Canvas
A simple and easy-to-use library to enjoy videogames programming
One framework for creating powerful cross-platform games
Desktop/Android/HTML5/iOS Java game development framework
Open source library for creative expression on the web, desktop, etc.
Real Time Strategy game engine supporting early Westwood classics
JavaScript framework to build game engines, games, emulators and apps
INSTEAD - Simple Text Adventure Interpreter.
Examples of procedural geometry for Unity3D C#
Orx: Data-Driven Game Engine
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
Cinema Enters Game Console
Sdk library for creating 2048 game in c#.
2D Game Engine
A cross platform Lua based game engine
Cross-platform 2D and 3D game engine
Multidocument automation by templates - for sphinx, mkdocs, epydoc ...
Reactive extensions for Unity
Build Cross-platform Applications
Asphyre is a cross-platform framework for Delphi and FreePascal.
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3