Most prolific Cooking Mama record breaker

According to Official Guinness Records,

The most prolific record breaker for the Cooking Mama series (Majesco, 2006-) is William Willemstyn III (USA), who holds 9 records in total.
All of Willemstyn's achievements were made on the Nintendo DS version of the game.
Featured in Guinness World Records Gamers Edition 2011

For a complete list of 2006 records, please visit 2006 Guinness Records in United States.

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