Zig game engine & graphics toolkit
A game engine powered by python and panda3d
Descent 3 by Outrage Entertainment
lua dev plugin for unreal engine 4 or 5
2D JavaScript Physics Engine
Game engine supporting many 3D/2D formats and graphic effects
High performance UI layout library in C
Orx: Portable Game Engine
Chess Database and PGN viewer
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Mech Station Beta - Tower Defense like Game
The multiplayer game engine
An ASI plugin for Grand Theft Auto V
8-bit Graphical API for Java
Source code of the chapters of the book 3D Game Development with LWJGL
Web powered cross-platform 3D, WebXR game engine
DarkForest, the Facebook Go engine
scriptable game engine with built-in support for 2D graphics and sound
Extensive Java chess database libraries.
3D .NET engine for Windows, Linux, Mac
3D urban environment renderer : browser-app ; as well as a GTA clone
Project to create a Java based SCUMM engine.
Multi-platform game engine similar to old Megaman with a stage editor
plugin-based RPG manager in C++ and Qt5
A traditional top-down OpenGL car racing game