Notch was posting about his game on 4chan and on various places on the internet. It didn't just go viral out of nowhere. He also gave it away for free until he

Notch was posting about his game on 4chan and on various places on the internet. It didn't just go viral out of nowhere. He also gave it away for free until he started charging for it so calling those downloads sales is disingenuous. Anyway sure, maybe there are apps that instantly go viral with minimal marketing but if you build an amazing tool, put it on the internet and don't talk about it to anyone I guarantee you it will get 0 sales.