Welcome to IsaacGuru's Item Laboratory!
This website shows descriptions about all items in the Mastema mod for The Binding of Isaac, using a semi-automated process of reading the game's files, and lots of hard work by IsaacGuru and the community, including the mod's developers.

Hover over any item on the right side to display information about it.

Click on an item to freeze its description for 3 seconds, and allow interaction with the left-side panel!
Head over to the Settings Page to toggle various settings that can enhance your experience.
ANNOUNCEMENT The Repentance+ DLC has been released! The full release notes can be found here. The new game files have been imported to the website and any item attribute changes are automatically shown. Manual descriptions have also been updated according to the release notes and other various sources. [dismiss]
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Unlockable Grants costume Has YouTube video Animated icon Favorite (?)

Glitched Slot item pool
Items in this pool are spawned when a Glitch Slot breaks.


▾Mastema items ()▾