Zig game engine & graphics toolkit
A game engine powered by python and panda3d
Game engine supporting many 3D/2D formats and graphic effects
0 A.D. is a free, open-source, cross-platform real-time strategy game.
A free 3d game for PC that does not limit the player. Fight,Build,Gain
A cross-platform port of Hexen II game.
The multiplayer game engine
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Source code of the chapters of the book 3D Game Development with LWJGL
Web powered cross-platform 3D, WebXR game engine
3D .NET engine for Windows, Linux, Mac
plugin-based RPG manager in C++ and Qt5
A traditional top-down OpenGL car racing game
A generic 2D engine for any kind of game
Cross-platform port of Arx Fatalis, a first-person role-playing game
Open source, moddable game engine for the "Polygon Love 2" game
Access to Irrlicht Engine SDK from assembler, C, Python, Basic, Pascal
realistic truck simulator with 3D graphics done from zero
simulations with Lagrangian method,both symbolic and by numeric deriv