Use the up and down arrow keys to avoid getting hit by the spikes! Watch out, the longer you last, the faster the spikes move! Use collectibles, to give you advantages! Some collectibles include: Heart: Restores one life Shield: Lasts only a few seconds, but will block spikes from hitting you. Golden Heart: Brings you to full health. HARD MODE Plays a bit more like flappy bird. Instead of using up and down, you only use up, to fly, and go down without doing anything. Keep in mind that you can still touch the bottom of the screen.