Multi Theft Auto is a game engine
Magic Another Game Engine
Svelto ECS C# Entity Component System
Full featured MUD server with all the trimmings.
Game engine to build text adventures.
A free 3D game engine to create games and realtimes scenes for Windows
Mini game engine for games104
Free and Open Game Programming Language for Windows and GNU/Linux
creator : Nikola Lukic about : Visual JS 2d canvas multiplatform game
Text Based Game Engine and Parser
C++ Text Adventure Engine
a flexible game engine
3D game engine for C and C++
WGFX 2D Game Engine
OSGET is the first open source mobile game engine template.