Powerful, Beautiful, Simple, Open - Web-Based 3D At Its Best.
A 2D physics engine for realistic game simulations.
A versatile C++ library for creative coding across multiple platforms.
Create cross-platform games easier and free. All with one codebase.
libGDX is a cross-platform Java game development framework based on OpenGL (ES).

LÖVE is an awesome framework you can use to make 2D games in Lua.

Matter.js is a 2D physics engine for the web.

One framework for creating powerful cross-platfrom games.

Scene-oriented, flexible 3D engine for C++, Python, C# and Java.
A flexible software sketchbook and a language for learning how to code.

Pygame is an open-source Python library for making games built on top of the excellent SDL library.

The cross-platform windowing and multimedia library for Python.

Simple and easy-to-use library to enjoy videogames programming.

Cross-platform development library for game developers.

Simple and fast multimedia library.