This game is rated ESRB: Everyone for Animated Violence.
Midway's Greatest Arcade Hits: Volume 1 for Nintendo 64 contains the four Williams-produced games Defender, Joust, Robotron: 2084, and Sinistar plus the two extra games: Root Beer Tapper (Tapper) and Spy Hunter. It was also released for Dreamcast with the games Bubbles and Defender II (Stargate) instead of Root Beer Tapper (Tapper) and Spy Hunter.
