Pretty much Jubbzy or @Jubbzie or w/e hosted it a couple of times and it was two tribes playing "Sole Survivor" against one another. Individual immunity was banned (would result in a long/perm ban if done) until the merge. At the merge, the other tribe (not playing Sole Survivor) got a free merge. Nobody on the Sole Survivor tribe could do tribal challenges, only individual. They played it out until two remained and the jury of whatever voted a winner.