Strange, the S and Z look better as the opposite of the shapes I expected them to be. 15 letters are basic shapes, 3 letters are 1x2 constructs, 6 letters are 2x2 constructs, and 2 letters are 3x3 constructs.
An experimental 3-D/geometric font, inspired by Mynameiscapo's "Metal Hammer [beta]". My first attempt was "InTrude"; I tried to make it look like it's coming right out of the screen or off of the page, but it wasn't what I was looking for. After retooling it, here is the result: it works! See all fonts: "Backtrude", "OneQuarterTrude", "OneQuarterTrude Inverse", "MidTrude", "ThreeQuarterTrude", "ThreeQuarterTrude Inverse", "ExTrude", "InTrude", and "FrontTrude"