It sometimes confuses me how people seem to not think that word of mouth is a thing. It absolutely is. In the games industry, there are endless examples. Because on places like Steam, you generally only get promoted if you're already doing well - yet there are countless games that flop at launch meaning 0 visibility, yet they also see great long-tail success.
One of my favorite is Kenshi. [1] Within a few months after launch, the dev was left with literally tens of users. Yet he continued working on it endlessly (while working as a part time security guard) and today it has near to more players than ever. And that's because of word of mouth. Which I suppose is something I'm also here partaking in. It's a great game!