Underground Builders Community, is one that tolerates a certain type of builder and player. These are the people who appreciate technical and complex builds in sandbox games. These are also the people who do not grief in such games at least when things are serious. It's important to note that tensions in the previous group resulted in creating this one. This group is as tolerant as it's leaders and foundation, which is very intolerant of immature behavior. This does not mean we wont mess around occasionally but realize that griefing and being mean to fellow builders or players isn't tolerated at all.