Consider quantifying your excitement for Kingdom Hearts 3D: Dream Drop Distance into financial form. What number would it be? Square Enix hopes some of you will have come up with the number $54.99, as that's what it's asking for the game's special edition.

The Mark of Mastery edition — so far only announced for North America — comes with five AR cards, a snap-on 3DS protector case and 12 art cards bearing images from the series. Oh, and you get the game too, of course.

It's out alongside the game on 31st July. If it stays exclusive to North America, it might take the sting out of the fact Europe gets the game 11 days sooner.