sauerbraten with LuaJit2 scripting
Tongue-in-cheek action RPG
Programs for ComputerCraft mods of Minecraft
A free engine for C&C Tiberian Dawn
A Simple Game Engine
A retro style video game engine for RPGs and adventure games.
Scriptable frontend for media applications.
A WIP space combat game
Pear3DEngine is a modern and modular 3D development framework
Fast and easy-to-use pathfinding library for grid-based games
Karaoke effects creation tool with ASS and Lua.
Open-source first-person RPG with procedurally generated elements
A GUI Level Editor for the Enigma Game
AG Content Pack