I’m assuming that you’re reading this because you have used a previous version of Ultima III — you can simply drag your “Roster” file from any older version of Ultima III into your Ultima III 1.4.2 folder to preserve your game(s)-in-progress. If you have previously registered Ultima III and you downloaded the entire 1.4.2 archive, you will need to re-enter your registration information. Do this before you drag your Roster file in! If you don’t, any abilities your characters had above 25 will be stripped away.
Even if you’re familiar with a previous version of Ultima III, I’d still suggest skimming through the “Read Me First” file for additional tidbits. What is listed here is just a summary of changes to Ultima III since version 1.3.
∞ Fixed a bug causing crashes on pre-Mac OS 8.5.
∞ Menu bar & Control Strip now properly hide themselves in all OS versions.
∞ Added support for old non-PowerPC Macs (largely untested).
∞ When viewing your character's statistics, you can click on an item to use it, or drag items to other players.
∞ Organize a Party completely made over with more Mac-like interface.
∞ Many graphics updated with 24-bit (Millions of colors) versions.
∞ Optionally switches main display into 640x480 pixels in Millions of colors.
