I was playing with tiles and designed this font as units to create visual texture. Hiding letters in them came to me by accident when I did an overlay instead of a straight copy-paste. The letters are pleasently difficult to see - but for tiling interesting units in large sizes this font should be suitable.
Dedicated to my best friend in college: my CASIO fx-7700G Power Graphic Scientific Calculator !... Basic Latin character set completed by Goatmeal, along with the addition of three function memory slot subscript numbers (7, 8 & 9) that are not present on the calculator (only six function memory slots are available).