Planet X

Planet X is a planet in Ultima II. It is where Father Antos can be found. Castle Barataria and Mary's Town are found on it as well.

In New San Antonio, to get the Force Field Ring, the Stranger had to get the blessing of Father Antos, before the old man would sell it to him/her. Using a space ship in the time of Aftermath, the Stranger warped to Planet X, getting the blessing from Father Antos in Castle Barataria to receive the ring.

Trivia

 * Planet X is not on the space chart of the documentation.
 * The coordinates of Planet X are 9,9,9.
 * Interesting enough, Castle Barataria has the same name as a castle in The Lands of the Feudal Lords in Ultima I.