Apple has been calling the iPhone a gaming platform lately, and a few more apps like I Love Katamari ($7.99, available here) could make believers out of us.

This is an iPhone version of a hugely popular bizarre PlayStation game from Japan. You play as a small prince, son of the King of All Cosmos, whose job it is to roll a small sticky ball (a katamari) around so that things will attach to it. As the ball grows, you can collect larger and larger items.

You play by tilting the iPhone in any direction, and the game is surprisingly responsive. Choose from one of four mode: story mode (roll up requested items), time attack mode (roll up as much as possible in the time limit), exact size challenge mode (get your ball to match a given size), and eternal mode (work at your own pace, without any limits).

We love the silliness of the game, and dig the pop Japanese score that goes with it. While it's one of the oddest premises ever for a video game, I Love Katamari is a crazy good time.