You have entered the cave of trials and your mission is to complete all the 20 levels to become the ninja master. Gain as much height as you can. If you fall, the game will be over. Collect several upgrades like the ninja powder, spirit veil and the heart which restores health. Use the arrow keys to move around and the space key to fly. Hit the x key to attack. Avoid the arrows and spikes that may be fatal. The higher you go and the more gold coins and items you collect, the higher will be your score. Your fly meter is shown that you may refill by collecting the spirit veil.