Speed, which is a skill game on Aqua Venatus. When you are playing this game, you have to play very fast, otherwise somebody else will quicker than you, you might lost your chance to giving card. Speed is the rate of motion, or equivalently the rate of change in position: the distance traveled per unit of time.Speed is a scalar quantity with dimensions time; the equivalent vector quantity to speed is velocity. Speed is measured in the same physical units of measurement as velocity, but does not contain the element of direction that velocity has. Speed is thus the magnitude component of velocity.