Welcome To My Rollercoaster Creator! Choose your speed, then press enter, if you choose a number outside the range given (1-10) or you type a letter it will ask you again. Once you have chosen your speed, your cart will move. all you need to do is use the up and down arrow keys to control it and it will automatically create your track! To end your ride control the cart to the black bit on the right, then it will loop your created ride!