Noobstown v.4 is gone, when Joe tried moving it over to a new server, something went horribly wrong and v.4 was no longer retrievable.
They wanted money to try and get it back, but Joe declined, and I agree with his decision.
So he is now moving full speed ahead on Noobstown v.5
There are multiple forum posts on the topic, i subject you go and take a look at them to get up to date.