Grids can be used as alternative ground, such as on elevated maps. Players can walk on it, forge on it, and use it like any other large flat piece (such as a coliseum wall ), with the advantage of it looking futuristic as well as being transparent - which can change gameplay in maps with multiple levels. It can be very handy for people who are forging a 'floating' map or people who want symmetry. It is one of the largest single forge items in the Halo games, with enough space for a small 2 - 4 player map to be built upon it.