A standalone UQM mod made to enhance gameplay and visuals
GemRB is a portable open-source implementation of the Infinity Engine
Cooperative multiplayer graphical RPG and adventure game
Arianne is an engine to develop multiplayer online games like Stendhal
Open-source reimplementation of the original King's Bounty
Individualizes Rolemaster creatures.
General Purpose Engine for Graphic Adventures.
BattleTech MUX Client
Opengate is a Jumpgate remake
2D Open Source MMORPG
Defeat all the beasties to claim victory!