Viewing Mod
The Agony of Isaac
100+ new enemies, 2000+ new rooms
Created 2 years ago

An afterbirth+ version is in the works, please be patients! We've some amazing new stuff coming your way <3



Screenshot Album

  • Over a 100 new enemies! Ranging from spiderflies to sackheads!
  • New bosses! Can you defeat Aether and The Blind?
  • Eternal enemies! Including new eternal bosses! Proceed with caution.
  • New props! Ranging from boxes to gravestones!
  • Most enemies can now become champions! Because who wouldn't like regenerating lil'haunts?
  • New rooms! Almost every floor was given new rooms with a fitting theme!
  • A Basement Renovator Patch for those who want to create their own rooms with Agony's entities!
  • Both Afterbirth and Rebirth support!

Linux Isaac is case sensitive,
Running script to make everything lowercase fixes the issue. (Thanks to DashieGasai for the fix)
find my_root_dir -depth -exec rename 's/(.*)\/([^\/]*)/$1\/\L$2/' {} \;

Incompatibility issues with mods altering entities2.xml and any room files.

Clearly describe what happened, try to always include screenshots, the seed as well as the version of the mod you're using. Also be sure you followed the Installation instructions correctly!

Q: Do I have permission to use this mod in mine?
A: You can use Agony in your own mod as long as you follow these rules:
-Clearly state what Agony does in your mod's description
-Provide a link to Agony in your mod's description
-Only redistribute the files you modified, this means you can't include the new enemies sprites in your mod.
As long as you follow these little rules, you're free to do whatever you want with Agony!

Q: Afterbirth?
A: We feature the Afterbirth and the Rebirth version of our mod in the download. Be sure to install the correct one!

Q: How do I uninstall the mod?
A: Just delete all files/folders except the "packed" folder from the "resources" folder.

Q: Does this work with [name of a mod]?
A: As long as [name of a mod] either explicitly states that it works with Agony or doesn't edit any files that Agony already edits, it should work.

Q: Does this mod really add new enemies or does it replace existing ones?
A: This mod doesn't replace anything. All mod content coexists with the vanilla content.

Q: I get a RAR file from the download. How do I open that?
A: You need to install 7-Zip or a similar program.

All feedback is greatly appreciated! If you think something is not right, please, feel free to leave a comment clearly explaining why.
I recommend playing on hard mode for all the content to show up properly!
I strongly recommend installing the mod manually, mod loaders have trouble installing this mod.

Drop the "resources" folder for the appropriate version into your game folder (%SteamRoot%\SteamApps\common\The Binding of Isaac Rebirth\) and you're good to go! I recommend using a fresh, unmodded copy of the game, make sure to always backup your game files!

Huge thanks to DedChar, without whom the updates woudl not keep coming!
Thanks to Elkopolo, huge contributor to the mod.
Huge thanks to J??, another really big contributor to the mod, here's his tumblr)
, go check him out!
And thanks to anyone who's contributed to the mod in any way, shape or form:
Epicmidget, TheBLP, Vikr, StainBreak, NintendoFan37, Reiji, SomeGuy, Stewartisme, IkanaCanyon, MidnightBrimstone, SDLoA, M_Blox, MajorWipeout, Dassery, LoudSpeaker, SomeGuyNamedJon, NotYourSagittarius, ArMM1998, Yaomon, MitBoy, Tomoscky, Wolter, Jean-Alphonse, Bonjouro, Chronometrics, Walrus, Poiuy.
Special thanks to Noodle for making this amazing site and for being helpful!
Feel free to shout at me in a comment if I forgot anyone!


x 1443

- All the rooms have now been ported!

- Bunch of bugfixes

- Bugfixes, yaay!

- Thanks to dedChar, the bosses work properly now, yay :D

- Fixed unfair rooms (thanks to /u/Zamiell)

- Updated BR patch

- Fixed unfair rooms (thanks to /u/Zamiell)

- Updated BR patch

- Added a few new greed waves

- Made the rooms more frequent

- /!\ IMPORTANT /!\ Make sure to remove any old version of Agony before installign this new one, not doing so WILL cause major issues. Sorry for the inconvenience. :)

- Lots of bugfixes

- Some special rooms have been updated, yay!

- Minor tweaks

- All content hs been updated thanks to dedChar, yay!

- Fixed a bug that was messing the animations up

- Updated some of the content for Afterbirth.

- updated to zip file

Hello! This mod is looking amazing, and I even played it on Afterbirth. But will you port your mod on Afterbirth+ ?
mine downloads rar shortcuts and wont work what do i do
Does this work with God Mode like in rebirth?
This mod is the only other mod alongside Antibirth that I think deserves to be added into the actual game.
make the afterbirth+ version here, please.
When is the Afterbirth + update coming?
The new version will take a lot of work, be patient!
A rebirth compatible version is available yes
difficult instructions in the README but it crashes when i start a game.idk what i did wrong but i'll explain more if i get a reply
Starbolt yes this is Afterbirth and rebirth. It also states in the description of the mod that this is both, and he is working on afterbirth+
If anyone wants to know, this kinda does work with AB+. I tried it with Greedier mode and Apollyon. New enemies were in greedier mode and Apollyon worked, but after a while it did crash. I only tried it for about 5 minutes, but it did work as far as I could.
Update, played for about an hour with a couple of mods like the heretic and infinite item charges. The heretic crashed the game after a minute or 3 and infinite item charges works pretty okay, but will still crash but not as often(In 1 hour of gameplay, for me it only crashed twice). Also some tears affects from AB+ might be invisible, but still do damage like the Apple! tears and also some familiars like depression were invisible, but still left a trail of tears. Might try to make the tears and familiars visible, but not sure.
I'm waiting till it's gonna be compatible with AB+ ;)
Please tell me you are planning on porting the main features of this mod to Afterbirth+'s new API? It's hard to go back to not playing Isaac with this mod.
Wondering will you port this to afterbirth+ modding tools ?
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.