This is an awesome creative 'minecraft' server, it supports a guest world(where you all start off at), which don't take long to upgrade to Member rank ashuming you have done what the signs say to do in spawn quick enough, after you are promoted Member, you may visit the other worlds, there is 2 nature worlds(normal worlds) and 2 flat worlds, and a project world and thats as far as i can remember There are some really nice people in the server and friendly staff.(They also have a survival server which you will find the IP to in the spawn of the main world)
IP: c.mcblock.net:25565