mouse to move, when the countdown is showing, put your mouse in the middle of the screen, if you see purple vines, click your mouse to shoot a bullet, and stay away from the edges. If you crash, click the green flag again. DONT PLAY WITH HEADPHONES (VERY LOUD NOISES)
I used a custom block to move the background, and used sensing blocks to handle collision detection. I used a GameRunning variable to keep everything running, I used a ScrollY, and speed variable to control background movement, and used the variable ShotFired, and Scene to show which part of the map the player is currently in, and the destroy variable to destroy the purple vines. I used the timer default variable from the sensing section to control the timed actions. All coding done by me.