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We were doing an adventure map. You needed to have skype because it was quite challenging. Also there were too many people logging in and we didn't want anything getting destroyed unintentionally.
We play oosos on Sal's server but there is no whitelist since the map gets wiped after every game. Also the server is only put up when we have enough people to get a game going.
Hey look we have an unfinished oosos wiki: http://oowow.wikia.com/wiki/OO:WoW_Wiki