All of the magic is GRAVITY.The gravity increases when screen is touched, and it restores to normal when released.
The game rule is very simple, but how far ninja runs will completey depend on your skill.
Some tips may be helpful:
1. Touch to acclerate speed on declivity.
2. Release to make ninja fly on acclivity.
3. Fine tuning gravity when ninja is flying in the sky.
Good luck of the trip!
If you like tiny wings, dragon fly, you'll like moon chaser more!