MCmaster2014 is just a nickname/alias I have. It means "Minecraft Master 2014" 2014 is when i first got the game, so that's why it's there.

It has nothing to do with the date.

I know it is

your name is outdated the date now is 2017

well minecraft is a non steam game so if you add it to your library its not going to show up here

I don't know, really. I tried adding Minecraft to my list, but it didn't show up, and it won't let me add it again.

why can't I see the games you have