The Tabula Rasa There are numerous indications that place Ultima - and the shards themselves - at some point in the distant future. Tabula Rasa - at least as far as most are concerned - occurs in a different fictional universe than Ultima. (As Garriot no longer possesses the rights.) However several elements alluded to in Ultima 2 / Worlds of Ultima: Origins - such as the Logos and a war between various advanced races - reoccurs in Tabula Rasa. Worth a read.