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Editor’s note: Derek Andersen is the founder of Startup Grind, a 35-city event series hosted in 15-countries that educates, inspires, and connects entrepreneurs. He also founded Commonred (acquired by Income.com) and is ex-Electronic Arts.

There are virtually no companies in Silicon Valley that exit north of $100MM or create a billion dollar business, that don’t raise Venture Capital funding. Charles and Kai Huang, the founders of Red Octane are the exception having done both. They went on to sell more than 30MM units of Guitar Hero becoming one of the top videogame franchises of all time. Recently I sat down with Charles at Startup Grind and heard this fascinating story.