As Magikarp Jump is currently only available in Italy, millions of people are unable to raise a Magikarp to splash its way to victory, but there is a way other than waiting for the wider release.
To put it simply, all you need is an Italian iTunes account. If you have one then get downloading. If you don't, then there are a couple of quick steps that can help you get this game.
First, log out of the iTunes account on your iPhone, iPod or iPad. Next, click this link on your device. It will take you to the iTunes page for the game. Click "Get" and it'll prompt you to sign in.
Instead of doing this with your usual account, go to "create a new account" and use a different e-mail address. You'll also need to fill it in with an Italian home address.
As you're trying to purchase a free game, you'll be able to make an account without putting in any billing information. Once your account is created and activated, you can download the game and put it onto your device. Then, simply log out of the account and log back into your original one. The game will still be available for use.
Do note, that even though there is a language selection in the game, it only has Italian coded into it at the moment, so it may be best to brush up on your lingo.
If you're an Android user, then you'll have to wait a little longer, we're afraid. The game is currently only available on iOS, but that will change soon.