The DLC introduced a substantial volume of content that altered the core gameplay loop:
In 2015, a final major update called the was released for free to owners of the DLC. It introduced: binding-of-isaac-wrath-of-the-lamb
: Added over 100 new items, including "Trinkets"—passive items like the Polaroid or Curved Horn that are held in a separate slot and provide unique buffs. The DLC introduced a substantial volume of content
: Added a final, secret chapter accessible after defeating Isaac, serving as the ultimate endgame challenge of the original version. The Eternal Edition secret chapter accessible after defeating Isaac