You can download it in http://www.romsite.net/?q=pokemon+Mystery+Dungeon&system=1
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It is not at all a mystery, so the question is not sensible.
It's not a mystery: a decimal will repeat if the prime factors
of the divisor contain any prime except 2 and 5 (the factors of 10,
the base of our decimal numbering system).
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universal hint system, UHS
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Buy action replay and use cheats, or use the WI-FI Mystery Gift
System