Press the green flag to start the race. Press "Space" to reset the racers to the starting positions. NOTE: There is a sound for the gun going off, so turn on your sound to get the full experience!
I got the revolver sprite from http://pivotgalaxy.weebly.com I got the bullet sprite from https://joshcodev.wordpress.com For the different tracks I just used the Scratch background editor and added the lines and changed some colors.