Ravenloft Jumpchain C.Y.O.A.

From the introduction: Welcome to the Demiplane of Dread. A realm controlled by the Darklords and a Mysterious Dark Powers that grants them power and takes away their freedom. This realm is home to some of the darkest and depraved souls in all of the multiverse and for the next 10 years it will be your home as well. You will be given a new identity, a new life. It will come complete with memories, friends, family and possibly enemies. Be very careful of your deeds here.