I don't want to make it hard but accidentally I've found that linux terminal-based games/tools are just awesome for my kids too. They now can log in to the machine themselves, start the shell and there are already two fun things they can spend a lot of time with
* ponysay
* cowsay
Are there any more games/tools for kids which are based on terminal?
To be honest, I can give them xfce/gui access, but then there are a ton of things they/I have to worry.
Thanks
Also grab moon-buggy if it's available.