PC versionPC Fans have made a PC version. Some are still early, so read the project page first.
Fans took Final Fantasy XI (xi-on-anything) apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here is the project we know about:
Static recompilation of FINAL FANTASY XI's FFXiMain.dll (and FFXi.dll) from 32-bit x86 to C, so the game runs natively on arm64 macOS without Wine or Rosetta