If you want to Automake your puzzle, see the paragraph right below. If you want to design it by keys, read the paragraph far below. If You Press D, you can Automake your maze, just choose type in "Automake" Move your arrow keys to design a puzzle. You can do whatever you want, no one is restricting you. When you're done making your mind blowing puzzle, press "D" to initiate the game, which you have to travel up your own maze in order to get the Key. After Game Over, Try making a more interesting creation!
Key is a Keyblade from Kingdom Hearts. Every Maze you can create is Possible! Even though you're making the maze, there is always a way to solve it! Song is "No Happy Endings" from Unknown Author