When one finishes they upload the their save and choose the save of someone else to continue and then the cycle continues.
For example, you me and salt die in our game, We all upload or saves and then I take salts, you take mine and salt takes yours. We just don't tell who's save we choose but it can't be ours.
That is needlessly complicated and sucks all the fun out of having a big fat succession game where we can all mess with each other's stuff. ;w;