INSTEAD - Simple Text Adventure Interpreter.
An isometric arcade-style game of skill, puzzles and exploration
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
2D Game Engine
A cross platform Lua based game engine
Cross-platform 2D and 3D game engine
IRB is a game creation toolkit
2D ARPG Engine
computer simulation for my raspberry pi
Single-/multi-player card game Mau Mau (similar to UNO®)
A retro style video game engine for RPGs and adventure games.
Scriptable frontend for media applications.
Pear3DEngine is a modern and modular 3D development framework
AdventureMap peripherals for ComputerCraft
Make games with Lego-like building blocks