Orthoslap is a die and cards matching game designed to introduce engineering students to the concepts of orthographic projection and multiview engineering drawings. The game aims to strengthen 3D visualization skills while also encouraging interaction and communication between peers.

Each set of Orthoslap consists of one 2x2x2 inch master die, 6 sets of 6 cards corresponding to each face of the die, and 6 mini dice for each player to aid visualization. Gameplay consists of each player "slapping" down the correct top view to each roll of the master die. The dice were modeled using SolidWorks and AutoCad and manufactured with a 3D printer. The cards were drawn with AutoCad and designed with Photoshop.