Modern AS3 Game Engine
3D .NET engine for Windows, Linux, Mac
3D urban environment renderer : browser-app ; as well as a GTA clone
Open-source, cross-platform, C++ game engine for creating 2D/3D games
2D game engine for traditional platform games
.NET - VISUAL BASIC NVIDIA +ATI PHYSX SLIMDX DIRECTX 9 -ENGINE/WRAPPER
Turbulenz is a modular 3D and 2D game framework
Articulated-body simulation engine written in C
Mahasona engine is an open source game engine.
A traditional top-down OpenGL car racing game
Multi-axle Physically based Vehicle game
Educational framework for OpenGLES, OpenCL and OpenAL
A generic 2D engine for any kind of game
2D physics engine for games
Vehicle simulation with freedom of movement on large map (5x5km).
Free Android 2D OpenGL Game Engine