A .NET ascii/ansi console engine written in C# for MonoGame and XNA
The ioquake3 community effort to continue supporting/developing id's
Open source clone of the Age of Empires II engine
A dead simple 2D game engine for Go
Xash3D FWGS engine
Free game engine for development of desktop, mobile, and web games
An OpenGL RTS game engine written in C
Motor de juegos de aventura programable
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Injectable LUA scripting system, SDK generator, live property editor
A game engine for console based text games
a UCI chess engine
A PICO-8 demake of the SCUMM engine
2D Game Engine
Multi-platform game engine similar to old Megaman with a stage editor
Open Source 3D Game Engine
TurboSphere is an easy to learn and powerful JS based game engine.
A truly extensible cross-platform game engine
Little game background framework in java.