Secret GP, created by Pablo Crubezy of FontStruct, is a free geometric symbol font made from compact, square-edged forms. Its signs use solid masses, abrupt steps, and squared gaps that recall coded marks rather than ordinary lettering. The repeated modular construction gives the set a stark, deliberately cryptic look.
Puzzle-game graphics are the most convincing setting, since the symbols can function as clues, map markers, or pieces of an invented alphabet. Album artwork and event posters can also use them as coded stamps. They suit mystery, espionage, and science-fiction themes, where abstract signs can become part of the fictional world.