CTFs as you need them
Open source library for N64 development
Self-hosted CMS platform based on the Laravel PHP Framework
Open source library for creative expression on the web, desktop, etc.
SDL based generic 2D game engine
TX Library is a tiny graphics library for Win32 written in C++.
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Reusable code for building video games with Jogamp NEWT
Mad Vandal's FortressCraft Mod Source Code
Source code of the chapters of the book 3D Game Development with LWJGL
Multidocument automation by templates - for sphinx, mkdocs, epydoc ...
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
Gorgon Game Engine (GGE) is a C++ game engine that handles many tasks.
Multimedia asset management and manipulator for Étoilé
XNA based game engine completely written in c#
a game library to develop audio games
C++ Framework for slot machine games
Pear3DEngine is a modern and modular 3D development framework
An extensible development framework for roleplay games.
Moteur de jeux de rôles descripifs (RP) en PHP