Block Party Festival is a festival held in Haebangchon, Seoul. For its visual identity, I focused on the layered hillside houses of the neighborhood and the concept of “blocks,” drawing inspiration from the structure of a Rubik’s Cube. As a result, I developed a tetrahedron as the core visual motif, translating the idea of modular blocks into a geometric form. Based on this system, I created custom typography in both Korean and English, using it as a key design element throughout the identity.