- The PC version of Ultima 3 must already be installed on your hard drive. If you have a previous version of the U3 Upgrade installed, you may:
- Let the installer detect and upgrade you to the latest version. (v3.0 onward)
- Replace it with a fresh copy of Ultima 3. (be sure to back up your savegame files ROSTER.ULT, PARTY.ULT, and SOSARIA.ULT if you do)
- Unzip the U3 Upgrade zip file into your Ultima 3 directory on your hard drive. This step will not affect your current installation or saved games.
- Run the following program to patch to the game files, depending on your O/S:
- Windows: u3upw (Can be launched directly from explorer)
- Linux: ./u3upl
- DOSBOX: u3up
- Configure DOSBOX to run with at least 3000 cycles. (10000 if you intend to run using CGA Composite mode.)
- Run ULTIMA3.COM in DOSBOX to start the game.
- If launching from GOG, edit the file dosboxULTIMA3_single.conf in the game directory and change ULTIMA.COM to ULTIMA3.COM.
Optional steps:
- This version includes SosariaMod. To launch it, see here.
- This version ships with default configuration. You can change this configuration using the following program, depending on your O/S:
- Windows: u3cfgw (Can be launched directly from explorer)
- Linux: ./u3cfgl
- DOSBOX: u3cfg
- This version ships with General MIDI as the default driver. You can change this by running SETM.EXE from the Ultima 3 directory to configure a different sound card (e.g. FM synth). This must be done within DOSBOX.