From PinataIsland.info, the Viva Piñata wiki
Your story begins when you arrive at a spot once known for its legendary life and colour, now sadly gone to ruin. Your job is to re-establish its old glory, putting your own individual tag on the place as you go. Help is at hand with this daunting task should you need it - close to home from an in-game cast and from around the world courtesy of fellow piñata enthusiasts.
Discover secrets and customise your candy-filled piñatas to see them grow, change, fight, and even dance! Guide them through their independent lives and protect them from dangers that threaten to break them open.
Viva Pinata has an ESRB rating of E for everyone for mild cartoon violence and comic mischief