Mountain Dew® Game Fuel® Electrifying Berry Flavor. Dew® with a charge of other natural flavors. 290 calories per bottle. every2minutes.com. Ryse®. Son of Rome. Ryse® not yet rated by the ESRB. May contain content inappropriate for children. Visit www.esrb.org for more information. Please recycle. Low sodium. Bottled under authority of Pepsico, Inc. Caffeine content: 124mg/20 fl oz. mountaindew.com. Product questions 1-800-433-2652.