An updated version of the previous released Unholy Edition. This edition has the following content: Steam gifting key A fan-art poster An Art Booklet with various design sketches from the developers Along with new content exclusive to the Most Unholy Edition: An DRM-Free physical disc of the updated version of The Binding of Isaac (v1.50) The Binding of Isaac: Wrath of the Lamb expansion The Soundtrack as MP3 files on the same disc that has the DRM-Free copy of The Binding of Isaac Stickers Only released in Europe