Tetris by mishel_nnov of FontStruct is a free pixel font built entirely from solid square modules. The letters are tall and open, with stepped corners and deliberate gaps breaking up their vertical strokes. Diagonal and curved parts become stepped block patterns.
Game interfaces are its clearest setting, since the modular construction immediately recalls classic falling-block puzzles. It also suits tournament posters, arcade-themed merchandise, and packaging for retro gaming products. Within an interface, the letters can become maze walls, score panels, or pieces of the game artwork itself.