Press the green flag. Your maze will be generated in a couple of seconds. Change the number in the render maze (5000) block for a... actually, I don't know if there is a word for this, lets just call it maziness. Do that for a mazier maze.
I needed a maze for my maze project, so I made a generator for the maze. NOTE: This is a bad maze generator. If you need one, you can try to fix this one, but I would recommend using an already made one. This one just draws random lines.