The highest rolls for a single die is sixes, which is a five letter word. This is the maximum number of points that can be achieved when rolling a single die. The number of sides on a die is determined by the type of game being played, but the most common die has six sides. Each side is numbered from one to six and when the die is rolled, the number facing up is the result. Rolling a six is the highest possible outcome when playing with a single die.