An improved collection page that shows item descriptions. Before you start playing The Binding of Isaac: Rebirth, the game wants you to decide what character you would like to play. There are two new playable characters in Antibirth, Bethany and Jacob & Esau, each with a unique playstyle. Composer expanding it with more information and/or adding a missing image. About the Mod Antibirth is a free fan-made expansion for The Binding of Isaac: Rebirth for the PC. A bestiary that shows detailed information about monsters. A new final chapter, and also including a new final boss and ending. New bosses, along with new variations of bosses introduced in Rebirth. Download (Steam) (Nintendo eShop) Daily Runs: Daily seeded runs with online leaderboards. The unlock requirements are as follows: A third new character, Edith, was cut due to balancing/design issues. Ridiculon (Matthias Bossi, Jon Evans) Danny Baranowsky The unlock requirements are as follows: From The Binding of Isaac: Antibirth Wiki.