A free app for Android, by OxoPlay.

The City Line Bus Simulator is the ultimate 3D simulator for Android devices. This app is perfect for both mobile phones and tablet devices. 

You will have to drive through various environments, such as the city, the desert, the snow, the rain, etc. 

You will also be able to pick up passengers at different stops along the way. If you drop your passengers, you will have to pick them up again.

There are 40 levels in this game. You will have to compete against the time to get to the destination.