Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Spring is a versatile 3D RTS game engine. Using extensively Lua for scripting game-specific code to make nearly every aspect of the engine customizable, from GUI, to unit AI, to pathfinding.
Crystal Space is an Open Source 3D SDK for Unix, Windows, and MacOS/X. It renders with OpenGL and features GLSL shaders, CG shaders, deferred rendering, dynamic shadows, bullet based physics library, terrain engine, skeleton based animation meshes, exporter for Blender, portals, etc...
Galaxy genesis is a project where you can:
Simulate gravity by adding in many different planets.
Load planets from file, meaning you can share galaxy's between people.
You can change modes with in the game, these mode at the moment are:
Mode 1: All planets have negative mass therefore repel each other.
Mode 2: Normal mode everything is as it is in real life.
Mode 3: Game mode where the planets are stationary and you battle to control the universe.
And many more things to come.
Strategoids is a real-time-strategy game/engine set in space with Newtonian physics. This project has moved to GitHub: http://github.com/megagun/strategoids
The Fallen Lands of Old: A 2D Real Time Strategy game programmed in C# with SDLdotNET. This game aims to employ completely new concepts, immersing depth, and a great story for a fresh gaming experience, rather than relying on flashy graphics or physics e
PhysicsDefense is going to be a little 3D game with a lot of physics involved using ODE, ODEJava, jME Physics 2 and jME. The goal is to keep balls from falling from an inclined plane, using obstacles, heat, cold and miscellaneous devices...
EtherStrategy is a space-based strategy and simulation game that implements: a fully 3D universe; realistic physics; complex social, civic, and technological aspects of governance; advanced, learning artificial intelligences; and hopefully great funitude
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Evening is a game engine based off of the open-sourced Quake 3 engine code. The Evning engine will have features like physics and per-pixel lighting and be perfect for commercial-quality game projects.
War games demos. These demos mainly shows coding of game logic, A.I., physics and basic game structure. In these demos we've tried show clean game logic code without powerful graphics. Demos use ONLY own and/or open source libraries.
XNA Shader 3D Game Engine, it includes physics, Artificial Intelegence, Particle System. Bone Animation Blending, C# Scripting, Billboards, Compressed Content Directory or Virtual File System for Content.