Press the green flag to start or restart when you die. Move with the arrow keys. Flowey will shoot pellets at you every 2 seconds, and the pellets bounce off the edge of the screen. The pellets max out at 15. If you touch a pellet, you lose 1 HP If your HP reaches 0, you die.
Flowey and Soul reference images from the Undertale wiki. Undertale by Toby Fox NOTE: The actual Flowey fight is very different from this.
