A free program for Android, by playducky.com.

Riding Extreme 3D is a free racing game with a unique physics-based system that lets you ride a bike and feel the road. It’s your job to control the bike and keep it from falling off the road.

You can do that by moving the bike to the left or right, and you can also do it by jumping off the road. The more you ride, the more you learn. The more you know, the better you can ride.

You also have the option to upgrade your bike after every ride for better performance.