Promising between 100-200 hours worth of additional gameplay, Bind of Isaac: Rebirth – Afterbirth makes hundreds of new additions to the well-worn Binding of Isaac formula.The Binding of Isaac: Rebirth – Afterbirth expansion contains more than 100 new items to puzzle over, 10 new challenges, a new playable character, an alternate final chapter, alternate floors, different game endings, more bosses, new enemy types, co-op babies, transformations, and even a full new game mode.