Originally Posted by Jay
Minecraft was released on the marketplace?
No this is the PNET release.
Minecraft for Marketplace comes out 9th May.
EDIT: I've looked into it, and the whole of the file is used, there is no blank places.
It extracts as savegame.dat but I'm wondering if MCEdit will read it.
EDIT 2: You can't convert it as of now since it doesn't have the PC "NBT" tags.