Grulla's letters –built on a 2x3 square grid– have (tri)angular counters & square terminals. Counterspace=letterspace, letter /f/ is kerned onto "rounded" letters (fc,fd,fe,fo,fs). Diacritics support spanish (hello from Argentina!)
Letters within letters! Type an uppercase letter followed by a lowercase letter to nest them. Type a period for an inner square, and > for an outer square.
This was an experiment from several years ago that I found half-finished while looking for potential CounterComp entries. I added missing letters and quite dramatically improved the existing ones. It's not perfect, and some combinations don't work so well (I'm particularly unhappy with capital I), but I think it turned out pretty well nonetheless.
Beware: for some reason, the downloaded font is huge-about 6 times the height of most other fonts-which makes it look horrible in e.g. MS Word, due to the pixel optimization at "small" sizes. I'm not sure what causes this, and consequentially, I don't know how to fix it.
Designed for illegibility. In theory, leverages neuroplasticity so you can read it after practice and nobody else can. May not be useful to anybody else. May not even work for me. Experimental.
Note: This is named "Cryptonomicon Basis", as the general form of the letters is the Cryptonomicon and this is the reference font- other fonts can be made with the same letter form and still implement Cryptonomicon.