As past calligrapher[1], I'd say it's not an overblown font, like ror6ax suggests, but it could easily be a bit simpler. At least an option of switchable serif/non-serif typeface. It doesn't need to be
Transport,
Johnston or
Gill in nature. (I suppose Tarn and his geographically close circle would be more familiar with Highway Gothic.) And, to continue the theme, perhaps something like Rotis Serif (or R. Semi Sans), as apparently used in Singapore, for the non-Sans choice.
Maybe choices of Scandiwegian/Germanic/Hibernian fancy fonts (greater or lesser rune-like nature, etc), but not default unless they're a light-touch on the decorations. At least for anything that
needs instant reading. Without going overboard, there'd be possibilities to use multi-typeface designs (not more than two whole families), perhaps to delineate between interface and 'lore' text. Menus (bar/drop-down/mouse-click, usually) the more serious, perhaps the psychology/thoughts display about the nature of a resident/visiting entity can be given a "life book" look..?
The one in the image examples makes
me think of mediæval manuscripts, with perhaps a Celtic twist (notably the "C") which is probably not far off from that intended. I could probably live with it if it doesn't get too far into the low px values.
[1] My handwriting was bad as a child, so I was enrolled on a course. My normal cursive handwriting is
still very bad, but I can now also write "minimum" in Black Gothic with a wide nib so that each of the 15 verticles look pretty much identical, and the eight cross-strokes almost invisible compared to their accompanying serifs. Even more unreadable, but
absurdly neat!