Obviously minecraft is big, I don’t play it myself but a cousin of mine got early on hooked.
To put this all into perspective. The game has A LOT of users and online gaming is a very lucrative hobby to be in IF your good at it. Just look at Twitch (an online streaming service for games) bought by Amazon for a lot of money.
The finale of a certain game attracted more online watchers then the super bowl, that just shows you how immensely popular online games are.