Arianne is an engine to develop multiplayer online games like Stendhal
GemRB is a portable open-source implementation of the Infinity Engine
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Individualizes Rolemaster creatures.
A game engine for console based text games
A Forge mod that implements SpongeAPI
Defeat all the beasties to claim victory!
The ECE is for creation and managing ED3+ED4 characters.
Ur-Quan Masters High Definition
A scriptable 2d randomizable maze game
The Clue! / Der Clou!
A complete web framework to create online Fighting Fantasy adventures