3D game engine/framework in C, with Luajit and Python bindings now
JASI - Java Event-Based Simulation Framework
KlayGE is a cross-platform open source game engine
An HTML5 game 'Catch The Cat' powered by Phaser 3
A fantasy RPG.
Modern AS3 Game Engine
A generic framework for chess games
Um pequeno framework didático de games em Java
Multimedia asset management and manipulator for Étoilé
XMICAE is a framework for browser-based IF/RPG narratives.
C++ Framework for slot machine games
A cross-platform game framework based on OpenGL and GObject.
An extensible development framework for roleplay games.
Powerful html5 & javascript library for creating applications & games.
Free position 2D maps for computer games.
Formerly CraveJs, it's for creating JavaScript applications and games.
Read and write PGN format and test moves for legality.