A game engine powered by python and panda3d
A game engine with an emphasis on real-time cutting-edge solutions
Zig game engine & graphics toolkit
GemRB is a portable open-source implementation of the Infinity Engine
Game engine supporting many 3D/2D formats and graphic effects
3D game engine/framework in C, with Luajit and Python bindings now
Real Time Strategy game engine supporting early Westwood classics
Descent 3 by Outrage Entertainment
A dead simple 2D game engine for Go
A 2D rigid body physics engine for the web
Godot Minimal Theme
2D JavaScript Physics Engine
High performance UI layout library in C
Orx: Portable Game Engine
A modern, cross-platform Quake game engine based on FitzQuake.
SDL based generic 2D game engine
Old-school 2D game engine
Full featured MUD server with all the trimmings.
C++ lightweight cross-platform game engine
The multiplayer game engine
A game engine for console based text games
State Management and Multiplayer Networking for Turn-Based Games