I have an NTSC-U Xbox (American) and I prefer the Codex Edition of AC:B, which is PAL only, to the Collectors Edition, which is NTSC only. So I'm wondering whether or not the game in the Codex Edition will work with my Xbox or not, as Special Editions are non-returnable. I know that AC:B PAL the normal edition is region free, however I'm not sure if it's the same thing with the Special Editons.