Binding of Isaac: Rebirth Wiki
Character Isaac appearance.png
Full red heartFull red heartFull red heart
Table dividing line 1.png
Challenge Number
Starting Items
3 Dollar Bill 3 Dollar Bill
Rainbow Baby Rainbow Baby
Rainbow Worm Rainbow Worm
Available Rooms
Item Pool Treasure Room.png: no          Item Pool Shop.png: yes
Boss Mom's Heart portrait.png
D8 D8
Unlock Method

PRIDE DAY! Defeat Mom

Added in Afterbirth

PRIDE DAY! is challenge #28. Start off with Rainbow Worm Rainbow Worm, the 3 Dollar Bill 3 Dollar Bill, and Rainbow Baby Rainbow Baby. The goal is to defeat Mom's Heart Mom's Heart or It Lives It Lives. The Rainbow Worm cannot be dropped in this challenge.


This is a rather casual challenge run. Many of the potential effects of the Rainbow Tears end up being beneficial overall. However, certain tears could temporarily be detrimental, such as Fire Mind Fire Mind tears causing self-damage or Proptosis Proptosis greatly decreasing range. It is necessary to adapt to the tear trajectories given by Rainbow Worm during the run.

Although you cannot drop the Rainbow Worm, you can still acquire other trinkets through use of a Gulp! pill or any items that allow you to hold two trinkets.


  • D8
    D8 - Complete PRIDE DAY! (challenge #28).


  • The name of the challenge "Pride Day" and the rainbow-themed items of the challenge is a reference to the LGBT Pride community and their signature rainbow flag.