So when I was 12 years old me and a buddy decided to make a minecraft server which really paid off in the end because we were bringing in $300+ A week (couple screenshots below). We started this server out from a friend who was bringing in $20,000/month off a minecraft server and we didn't believe it. Couple weeks later after $300-$400 spent we had a successful minecraft server with 40+ players daily.
We ended up selling the server for $1,000 after we made over $3,000 for a couple months. The server started breaking on us and we didn't know how to fix it so we just sold it for a small price. That guy later had problems and the server shut down. Long story short when we were 12 years old we were living nicely.
Make sure to throw me a follow <3 @dylmaxx
