There’s a pretty neat Reddit thread about this issue, but I don’t want to use Gallium so I just made a simple script to install it for me. Since it took a bit of experimenting to get it work (In the end it was all about the wine version, and not many other prerequisites were needed) I’m posting it in case others find it useful. Note that the last line is how you start the game later, so just make a start script or a desktop shortcut to start it afterwards.
Distro: Ubuntu 18.04 (x64)
if ! [ -x "$(command -v wine)" ]; then echo "Installing latest wine" #Update all repos sudo apt-get update #Enable 32bit (If you're on 64bit) sudo dpkg --add-architecture i386 #Add wine repo wget -nc https://dl.winehq.org/wine-builds/Release.key sudo apt-key add Release.key sudo apt-add-repository https://dl.winehq.org/wine-builds/ubuntu/ #Install wine-stable (3.0.1) sudo apt-get update sudo apt-get install --install-recommends winehq-stable fi echo "Installing latest winetricks" wget https://raw.githubusercontent.com/Winetricks/winetricks/master/src/winetricks chmod +x winetricks sudo mv winetricks /usr/bin echo "Creating FFXIV Wine prefix" mkdir ~/.ffxiv cd ~/.ffxiv echo "Downloading FFXIV setup file" wget http://gdl.square-enix.com/ffxiv/inst/ffxivsetup.exe echo "Installing required files with winetricks" WINEARCH=win32 WINEPREFIX=~/.ffxiv winetricks -q corefonts allfonts tahoma #ie8 wininet winhttp wmp9 wmp10 xinput ie8_kb2936068 devenum quartz hosts win7 echo "Installing game client" WINEARCH=win32 WINEPREFIX=~/.ffxiv wine ffxivsetup.exe echo "Starting game client. Please login and install the game" cd "drive_c/Program Files/SquareEnix/FINAL FANTASY XIV - A Realm Reborn/boot" WINEARCH=win32 WINEPREFIX=~/.ffxiv wine ffxivboot.exe