Open game and rendering engine packed into a JavaScript framework
An isometric arcade-style game of skill, puzzles and exploration
Vivid3D is a C++ IDE/3D engine, with python scripting.
A free 3D game engine to create games and realtimes scenes for Windows
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
2D Game Engine
Modern 3D engine and IDE written using C# and C++.
Free and Open Game Programming Language for Windows and GNU/Linux
IRB is a game creation toolkit
.NET - VISUAL BASIC NVIDIA +ATI PHYSX SLIMDX DIRECTX 9 -ENGINE/WRAPPER
Gorgon Game Engine (GGE) is a C++ game engine that handles many tasks.
A 2D tile map editor created using .NET framework.
cross-platform 2d game engine
Simple Point & Click Game
Make games with Lego-like building blocks