Ryzom Core is a toolkit for the development of massively online universes. It provides the base technologies and a set of development methodologies for the development of both client and server code.
NetPanzer is a massively multiplayer tank battle game. Free and Open Source. For Windows and Linux.
Gameplay concentrates on the core - no resource management is
needed. The game is based on quick tactical action and unit management in
real-time. Battles progress quickly and constantly as destroyed players respawn
with a set of new units. Players can join or leave multiplayer games at any
time.
This is the development page of the Napoleonic Era modification for Age of Empires III.
The Napoleonic Era core team shares data and hosts all kinds of files here.
Xivio.com was a commercial children's virtual world website created in 2006 by Gavin Conrad. This is the legacy World Server Java Core made available to the world to do with as it wishes.