A free app for Android, by Desert Safari Studios.

Real Moto Bike Stunt Bike Game is an open-world motorcycle simulator with realistic motorcycle physics. There are many different areas to explore. There are a lot of challenges to jump over, and you need to pass them to reach the next area. 

It is your job to jump over the obstacles and get to the other side. It is not so easy to do, but if you work hard, you will be able to ride through the difficult terrain and do amazing stunts. You need to be careful, though.