Finally, rating a GameMaker game! Nice work! The explanation at the end was kinda confusing, it would be a good idea to have some text and the start of the game too. Also at the start menu I couldn't easily figure out how to play, because I was expecting to click somewhere with the mouse; when I figured it out, I actually accidentally quit xD. So it would be a good idea to add some sort of arrow to let the user know what they have selected (in your game you have white and red and for me neither red or white made it clear if i have selected 'play' or 'quit')