> This is just not true.
Minecraft is the best selling game of all time[0] and while it's been marketed more since Microsoft purchased it, the first million sales happened within 7 months of charging for the game. Just over a year after commercial release it hit 10 million sales.
This was not a period of Minecraft marketing. Most sales were due to people simply seeing others (friends, YouTubers) playing the game and wanting to try it themselves.
[0]: Wikipedia claims 238 million sales, vs GTA V in second place with 155 million. https://en.wikipedia.org/wiki/List_of_best-selling_video_gam...
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.