With hundreds of published titles, 3D GameStudio authoring suite for 2D, 3D realtime applications. It combines the C-Script programming language with a high-end 3D engine, a 2D engine, a physics engine, a level, terrain and model editor, etc...
open source high performance realtime 3D engine written and usable in C++ and also available for .NET languages. It is completely cross-platform, using D3D, OpenGL and its own software renderer.
a 2D game development library for the Ruby and C++ programming languages, available for Mac OS X, Windows and Linux. (MSVC++ 2005 needed for the Windows C++ version).
real-time strategy game similar to Warcraft II released under GPL. Graphics and Textures created from shots of real models made out of plasticine! developed as a project at Faculty of Mathematics and Physics at Charles University, Prague by 6 students
a framework for developing games. Open source extendable, object-oriented game engine written in C++engine with cross-platform plugin-based architecture.
a free multiplayer online game with 3d graphics. Become part of an epic adventure in an ever-growing universe, complete with high-tech quests, enemy factions, and explosive space battles.
a game programming library for C/C++ developers distributed freely, supporting the following platforms: DOS, Unix (Linux, FreeBSD, Irix, Solaris, Darwin), Windows, QNX, BeOS and MacOS X. It provides many functions for graphics, sounds, player input, etc..
a 3D Collision Detection and Rigid Body Dynamics Library for games and animation. It is an Open Source multiplatform C++ project. Discrete and continuous collision detection, integrated into Blender 3D and COLLADA 1.4 Physics tools support.
Hardware accelerated 2D full featured middleware for all who want to develop commercial quality 2D games rapidly and easily. It covers all imaginable 2D game genres (DirectX)