Viva Piñata for iOS fan project
From PinataIsland.info, the Viva Piñata wiki
This is a fan project (currently in the concept stage) to create a version of Viva Piñata that could be played on iOS devices, such as the Apple iPad.
The goal, wherever possible, is to create a faithful and accurate rendition of the console game, so iOS gamers can experience a similar challenge and fun of attracting and managing a garden of piñata residents.
The iOS version will fully support a native touch-based interface for interacting with items and piñatas in the garden, instead of virtual (on-screen) joystick/D-pad controls.
For more details about this project, feel free to refer to the I want VP on the iPad, so... forum thread. Questions or comments can be posted there, or on this article's talk page.