Lego Island 2 Game Editor
An Adventure Game Engine
IRB is a game creation toolkit
A starter development kit that let you develop FF6-like games on PC.
Gaming library
2D game engine for traditional platform games
A generic framework for chess games
MMOG Framework. Starting place to build a game.
.NET - VISUAL BASIC NVIDIA +ATI PHYSX SLIMDX DIRECTX 9 -ENGINE/WRAPPER
A game engine written in the D programming language
Unreal Engine 4 first-person criminal simulator.
An advanced flexible game engine for Java.
Simple data driven web based gamebook engine using javascript.
evolution for vegastrike SpaceSim/Combat/Trade game
Animation graph editor.
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
c# lua bind with unity3d project for game development
Built to be ease of use, with no programming knowledge, Multi-platform
THIS SOFTWARE IS IN PRE-PRE-PRE-PRE-ALPHA. So don't really download it
javascript HTML5 game dev lib
Multimedia asset management and manipulator for Étoilé