Ambrosia Odyssey is a cancelled Action RPG with online multiplayer that was in development for the Playstation 2 in 2003 by Rocket Studio with help from KAI Graphics (for CG movies) and Supersweep (for music), meant to be published by Square Enix. The game had a multiple branching storyline in offline mode, in which you were able to create towns and foster their development to follow different plots, then connect online to share your game world with other players and visit their own towns and stories.
A video of the game was shown at the Tokyo Game Show 2003, but it only has some characters creation footage, blurred combats and a pre-rendered FMV (thanks a lot to CRC for preserving this video!).
An online beta testing was planned for spring 2004 (?), but we are not sure if it really happened before the cancellation. Ambrosia Odyssey was soon removed from Square Enix release list, maybe because of the popularity of their other online game, Final Fantasy XI.
Thanks to Userdante for the contribution!