Game developer Zygna has released a version of its virtual farming game Farmville for Apple's iPhone.
The iPhone game, first announced at WWDC last month, has been specially tailored to work on Apple's new iOS 4 platform.
Farmville gained immense popularity on social networking platform Facebook, making it the most popular web-based game in the world.
The game allows users to build and manage virtual farms in real time, and has an estimated 70 million active users world wide. An estimated four new users have joined the platform every second over the last five months.
The company has decided to offer exclusive market items and gifts to iPhone and iPod Touch users who download the free application.
The new version of Farmville makes full use of the iPhone's functionality, allowing users to use 'finger paint' to make grow crops more efficiently, and swipe their finger aross the screen to drive a virtual tractor through their farm.
Users will also be alerted by push notifications on the status of their crops and farm.