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‘Revenue Within Days’: A Teenager’s Side Hustle Grew Out of a Video Game Virus — and Into a Multi-Hundred-Million-Dollar Business

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July 8, 2025
‘Revenue Within Days’: A Teenager’s Side Hustle Grew Out of a Video Game Virus — and Into a Multi-Hundred-Million-Dollar Business ‘Revenue Within Days’: A Teenager’s Side Hustle Grew Out of a Video Game Virus — and Into a Multi-Hundred-Million-Dollar Business

Now 35, Marcin Kleczynski is a Bay Area-based founder who’s continuing to scale.

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