[cstreit]

They can play locally without ever signing on to a server. I wouldn't recommend allowing a 5 year old on a server as the language and asshattery is typical of any anonymous internet place.

They can start building or learning survival mode.

..as he/she gets better, they actually build working machines using pseudo code and logical structures represented by blocks, it's quite amazing. They can use physically movers, decisions like and/or/nor gates, you name it. You'd be amazed once you "get it". It's an amazingly deep "game".

Time limits though, my son, unsupervised, would sit there for 8 hours straight if we let him... ...but he was coding at age 7, so it's "his thing"