3D Interactive sandbox environment
A 3D, fully concurrent game engine
A cross-platform game framework based on OpenGL and GObject.
Pygrid is an open-source and cross-platform pygame/python 2D engine.
A multiplatform game engine for interactive fiction experiences
C library for manipulating Minecraft world data
A retro style video game engine for RPGs and adventure games.
2D Game Engine, based on OpenGL and focused on Isometric Games
Extremely simple joystick rumble / vibration library
Scriptable frontend for media applications.
Open source network game service
Create your own animated characters for games with ease!
A tool for editing OHRRPGCE RPG files
A lightweight HTML5 Game Engine
A truly extensible cross-platform game engine
A very small multi-platform game engine for creating desktop games.
UtiliGame is a light-weight game engine written in Java.