Tetrahedron by Neale Davidson is a free game-themed symbol font built around triangular polyhedral pieces. Each character appears on a sharply pointed tile, with letters or numbers turned along the three faces. Solid and outlined versions create a crisp, diagrammatic set with the look of tabletop components.
Its tabletop-game character makes it useful for rulebooks, puzzle graphics, and educational activity sheets based on spatial reasoning. It is most convincing in board-game design, where the symbols can function as illustrated pieces rather than ordinary text.