Shenmue Online
An MMO set in the Shenmue universe. While never officially cancelled by Sega despite widespread rumors, the project went quiet around 2007 and can be classified as vaporware.
Shenmue Online was originally announced in 2004, with a closed beta scheduled for 2005, followed by a public (China only) beta.
After the release of several screenshots, as well as a trailer showing some combat sequences and minigames, nothing else was shown.
