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I just bought a "factory sealed" copy of Electroplankton off of EBay, and opened it to get the registration code from the book to enter them on Club Nintendo. I opened it to discover that there was no code sheet, and the game had simply been reshrinkwrapped. If you're reading this, own the game, and don't care about Club Nintendo, if you could PM me the ID # that would be great. It's on a card with the instruction booklet. Shot in the dark, since it's been out forever, but worth a shot nonetheless.