Thanks ...
Yes, “Gondica” is published (1998, in Swedish only). It’s a heroic, swashbuckling, renaissance kind of RPG, using something similar to WEG’s d6-system. It’s written by the Swedish equivalent to Gary Gygax, Anders Blixt.
I looked at lots and lots of actual renaissance maps to get the right look and feel (and I also used only those map projections that actually existed during the late 15th and early 16th centuries).
The finished map of the keep will probably appear in a coming (free?) d20-adventure, along with a few other isometric perspective maps. I particularly look forward to making the map of a rather small hovel built from sticks and twigs.
Thanks for the praise.