writes "Cyan Worlds, Inc., creators of the Myst franchise, has decided to make their unsuccessful MMORPG Myst Online: Uru Live into an open source game. They will release all the source code for the client, server, and tools. They will continue to host the data on their own servers.
Uru was originally intended to be an online-only game. The publisher, Ubisoft, requested that a single-player version be made as well. They then canceled the online version in February 2004, while it was still in a closed beta. Cyan allowed fans to run their own servers as part of a completely unsupported service known as Until Uru. In February 2007, GameTap picked up Uru as one of their biggest games, only to cancel it a year later."Link to Original Source