Grid capture games, also called line coloring games, are a sub-genre of maze video games. The maze consists of lines which create a lattice of rectangles. The goal is to fill-in rectangles by traversing their perimeters while avoiding pursuers. The gameplay is not fundamentally different from Pac-Man (players still have to navigate the entire maze to complete a level), but enough games have used the grid motif that it is a distinct style. One unique element is that it is possible to capture multiple rectangles simultaneously, usually for extra points. Amidar established the model for this subgenre.