Download the award winning arcade running game of super-sonic speed today! Enjoy exciting and fun surfer game of 2017. enjoy the adrenaline rush at speed of ultrasonic. dash 4 your life at insane speeds on 2 subway train tracks. tap screen to run, dash 2, & rush 2 complete over 100 challenging levels. collect coins to unlock new levels. best game 4 kids and children. download free on google play today. great free game under 5mb.