Obviously there is the game itself. Wouldn't get too far without it! Interestingly, I believe this is the only Wii game to come in a black case. The standard cover art is beautiful in my opinion.
There is also an obligatory steelbook. I don't really like these. They are difficult to keep in good condition on shelves and in boxsets such as this, they don't even serve as the primary game case so all in all, they are pointless. This one looks fantastic in the flesh however and must be admired for that alone.
The other included bonus is an artbook. I'm not sure who the artist for Pandora's Tower was but I was impressed with the contents of the book. It's fair to say that the art style and even the game itself for that matter aren't your typical Nintendo fare but a break from Mario and Zelda is no bad thing. A console needs variety after all and I welcomed a game like this back when it was released. Below are a few samples from inside the artbook.