In episode 3 there is a secret easter egg in the game. When you have to look for clay blocks in an enderman suit you have the ability to talk to Rueben many times. If you talk to him a lot eventually the text will start repeating hence why most people don't know about this. If you continue to talk to Rueben then he will tell Jesse a joke and you will get the acevment 'that's some pig' posibly a reference to charolits web.
Episode 6 was originally saposed to have the characters Ivy(the girl who sold slime balls at endercon) and Calvin (Elliegard's assistant from episode 2) take the place of the YouTubers. The only reason we know this is if you look through the game files.
Minecraft itself was originally called Minecraft: Order of the stone. They decided to call the game just Minecraft ,but telltale took this name and thus the order of the stone was born.
Gill's full name is Gillburg.
There is an actual book based on mcsm it's called 'the secret