Ultima 6 Minecraft Conversion: Updated (A While Ago!)
Ian Albert’s really quite awesome implementation of the Ultima 6 world map (including dungeons) in Minecraft made a big splash on the scene back in 2010…even garnering a mention from Felicia Day, to whom it was dedicated.
Anyhow, Ian released a newer build of the map in March of this year. Not much was changed; he included some alternate level.dat files with it, but warns that these are untested. The big change was the conversion to the new Anvil format, which enables the project to work with Minecraft version 1.24 and above.