use arrow keys to get to the apple. If the apple just suddenly is gone, restart the game. (the game doesn't keep track of points.)
I used a tutorial on youtube, BUT I changed it a lot. It was supposed to be the game snake where you collect the fruit, and your head can't touch the wall and your head can't touch the tail. But i changed it so its different. I hope you enjoy the game! (P.S you can touch the walls)