Viewing Mod
Afterbirth Custom Challenge Launcher
Make your own challenge runs!
Created 1 year ago
This is my custom challenge launcher for Afterbirth.
You can create your own challenge runs and share them with friends.


-Customize starting HP and consumables
-Choose starting trinket and card/pill/rune
-Choose starting items
-Enemy and boss health multiplicator
-Simple item pool editor
-Load/save challenge runs and share them through codes or files
-Random run generator

The item pool editor is a very simple tool which let's you change/combine item pools. For example you could make treasure rooms contain angel room items instead of treasure room items or you could make shops sell devil items AND shop items.

If you find any bugs or you have any suggestions feel free to post them and they might be fixed/included in the next version. Also I'm not a native english speaker, so if you find any GUI text which is bad english feel free to correct me.


Just download the binary and start the .exe file. The tool should automatically detect your rebirth folder. If it doesn't it will prompt you to enter the root path of your Binding of Isaac - Rebirth installation.

Modify anything you want and hit the "Play" Button to start the run.

Using this tool may override following files. So it may collide with other mods which are using the same files:



x 968

- Added "Blindfolded" option

- Added "Deep Pockets" item

- Fixed bug where modifying itempools lead to an error message on starting the game.

- Added new items/trinkets and character unlocked by the ARG

- Minor bug fixes

- Randomized runs now randomly add items to the ban list

- Improved UI

- More "Random" buttons

- Ban items

- Choose a character for your challenge!

if you get an app called wine bottler it will open the file just fine but you need to direct it to the binding of Isaac steam folder.
Man I can't start normal runs anymore this shit is broken
my isaac rebirth wont start anymore
Yes because that's the launcher for AFTERBIRTH.
Doesn't work... the last update was 2015 and I'm in 2017 with it not working...Please update or make a newer version!
It worked on a cracked version of afterbirth+ but it didn't work anymore when i bought the game on steam with afterbirth and +
did you change the location of where you steam game is located?
when i use the play option it wont use the challenge i set, please help
can you plz add the new items added in the first booster pack
and if possible plz allow hush and delerium goals sense they have completion marks
can you remove items from the run without starting over?
Yes, just click on the item and press delete on your keyboard
how do you start the challenge you make I tried and I cant.
Why does this not work with the actual challenges?
Help! I accidentally used this on Rebirth thinking I could use it on Rebirth too and now I can't launch Rebirth! I deleted this and deleted Rebirth and it still doesn't work. Can someone help me?
The launcher actually changes game files to get the effect. Download the launcher again, and there should be a button with a medicine tablet-looking thing (forget me now) that also says "Revert to original game". This will change the files back to the original and your game should be A-OK.
Thank You so much! I would have never known this! Thank You!
Is there one for Rebirth? If so, can someone link it?
I´m too stupid for it and dont know how to actualy play the run i created
I think something is wrong. I hit Play, and it begins like normal. I look in my modded challenges and...nothing. Where do I save the file? I'm just saving it in Documents...
Afterbirth Custom Challenge Launcher custom challanges has like problems with runing if i do a challange where i use moms knife

can anyone help?

try redownloading it... maybe that will help.
Hey, im new to the modding community and this mod, can you only use items you have unlocked? if not then how do you start a challenge? i have one loaded in the CCL and i hit Play but it opens the game then nothing happens.. please help.
Is it WORKS for AfterBirth+
Programm is great
January 20, 2017 - 3 months ago

A new animated Planetarium theme (from Antibirth) is now available!

There is a new DLC search filter on the Browse Mods page.

Added the 50 new babies from Afterbirth+.

The What's New sheet will try to get your attention when there is a new site update.

Fixed some mod icons not changing after being updated.