Im just an anonymous person on the internet but even I can see that this can really hurt your reputation. That start of the article painting you by using a random game you had with Zuckerberg is very low. I think the previous commentor's suggestion to talk to a professional has merit.

They are effectively accusing you of destroying a multi-million company through libel... If this happened in court you'd be getting a lawyer, no? Maybe i'm being dramatic and the best way to go through this is just to ignore it and let it calm out but it's probably not a bad idea to talk to someone with a cool head and experience.