Ever since playing Civilization V and Stellaris I like the Century Gothic[en.wikipedia.org] font in my strategy games.
I have created a small mod for Field of Glory: Empires that changes the fonts to Century Gothic. All it really does is replacing three font files. As there is no Steam Workshop integration yet the mod has to be installed manually.

The latest release package can be found on my Github page here: Link[github.com]

The release package contains the JSGME executable which makes installing/uninstalling mods very easy.

• Copy JSGME.exe and the JSGME directory to the root directory of the game, e.g. C:\Steam\steamapps\common\Field of Glory Empires\
  
• Start JSGME.exe and choose the JSGME directory as your mod source directory
  
• Activate the mod in JSGME

If you don't want to use JSGME you can also install the mod manually, see section below.

Copy the three font files from JSGME\[Font] Century Gothic (1.x.x)\Core\ to C:\Steam\steamapps\common\Field of Glory Empires\Core overwriting any existing files. It is recommended to backup the original files first.