What counts toward progress?
Check active swaps, duplicates, pill uses, held trinkets and reroll risks through fifteen illustrated examples.
Transformation progress guide →Completed set
What Guppy does
- Grants flight.
- Each tear hit has a 66% chance to create a Blue Fly while Isaac has fewer than 30 Blue Flies.
How to transform
Acquire any 3 Guppy pieces. Kid's Drawing counts as one piece while it is held.
Qualifying pickups
Every item that counts
Rules that matter
Keep these exceptions in mind
- Kid's Drawing is a hard-coded trinket exception even though it does not carry the Guppy tag in the extracted item metadata.
- Dropping Kid's Drawing removes its held contribution. If only two other Guppy pieces remain, Guppy is immediately lost.
Reference
Game data and review
The transformation ID and tagged membership come from the extracted Repentance playerforms.xml and items_metadata.xml files. Item names, IDs, quality values, and icons come from the existing Bamboo Gaming item database. Special cases and effect wording were checked against the maintained Repentance reference. Repentance+ can differ.