Box/subdivision modeling
Box, or subdivision modeling is a polygonal modeling technique. Polygons are made up of three parts: vertexes, edges and faces. Put simply, they are basic shapes such as triangles, squares or rectangles. In box modeling for gaming, these are manipulated to create anything from monsters to aliens.
The process starts with a low-resolution mesh of a simple shape, which is then refined using 3D modeling software, sculpting areas that are not required. This mesh is then subdivided to allow artists to tweak polygons and create greater detail within certain areas, meaning a model eventually resembles a planned character or object. For beginners, this is likely to be the first technique you encounter, allowing you to make simple models using appropriate software.