The Binding of Isaac: Rebirth

The Binding of Isaac: Rebirth

1,477 ratings
True Co-op
File Size
2.167 MB
Dec 13, 2017 @ 3:29pm
Jun 24 @ 6:55pm
7 Change Notes ( view )
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True Co-op

Co-op babies begone! Now you and your friends can play as your own individual characters as True Co-op comes to Afterbirth+!

With up to four players, select your own individual characters, and have fun! You can pick up your own items, trinkets, cards, and pills, instead of having to share with player one!

Configure a number of different factors of gameplay, including enemy HP scaling per-character, player ghosts, and more!

A fun new challenge is available! Play with multiple characters at once-- at the same time! Painful, chaotic fun! I mean...long live the hive-mind!


Meowlala- Lead Dev, Programming
S-body- Art, Animation
OrigamiDragon- Art, Animation
Electoon- Art / Animation assistance, trailer, screenshots, testing
Deadskull- Testing
Ballisticannon- Testing
Chrome- Testing
Bustin a Bloch- Testing
EnderSlique- Testing

Special thanks to the Binding of Isaac discord community for support and testing, and to other members of Team Alpha who assisted in the discovery of game functionality that made this possible.

Q / A

I remember in Antibirth, the game was bugged so you couldn’t resume with a co-op character! Does this mod done by a completely different development group somehow have the same issue?
Nope. So long as the mod is enabled, all of the data for the additional co-op character will be saved-- just be sure to join in the proper order. If you don’t, just exit out and try again or swap controllers.

My friend is a ghost!! What do I do?
Find a devil or angel room-- you can resurrect them from there.

Mod characters!! I want mod characters!!
We offer the tools needed for proper mod character implementation, but it’ll have to be done on the side of character creators-- if you want your favorite modded character compatible, ask the creator if they can do compatibility.

This is confusing! Who is who?
If you’d like to see who’s who, hold down [TAB] to give off a colored tint on each player. If you want this tint on all the time, plus specially colored text indicators, there is an option to change it in the config.

Screw being a ghost! When my partner dies, I want everyone to feel it!
No problem-- we have a few other options for death in the config: the run ends when someone dies, a player dies and respawns as a ghost unable to be resurrected, dies and spawns as a ghost with the ability to resurrect in sacrifice rooms, or dies and spawns as a ghost with the ability to ressurect in devil or angel rooms (on by default).

You keep talking about this config, what’s that all about?
We actually made a challenge that allows you to customize how True Co-Op works, allowing you to change such options as the HUD, how players are resurrected, and more. Press R to exit the challenge.

Something something ONLINE CO-OP
No. Online Co-op is not feasible with a mod using solely the Afterbirth+ lua API.

Your mod breaks my mod! How can I fix this?
Directly below the Config table in main.lua is a blob of useful information for ensuring compatibility with True Co-Op! Feel free to ask questions to DeadInfinity#5189 (DeadInfinity) on Discord if you need clarification.
Popular Discussions View All (38)
Jul 5 @ 3:27am
PINNED: Known Issues
May 24 @ 3:03am
Crash with Booster Pack: 5
♚ Xenelios
Jul 10 @ 9:03pm
I have a little question
Mythical Doggo
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genosias Jul 19 @ 12:22pm 
@Deadinfinity No, i like that we can play both our favorite character, use active items, loot, etc...
But i think the game is made in a way we need to benefit from all items effect we can found during a run. So, at the end, your character is fully builded and you're prepared for the lasts floors.
Maybe an alternative could be a mode where every pedestal items are duplicated, so all players can take one.
DeadInfinity  [author] Jul 19 @ 7:55am 
@genosias it sounds like you might be more interested in the default co-op mode the game offers, where all effects are shared and coming back is very easy.
genosias Jul 18 @ 1:01pm 
Thank you, This is really cool. My girlfriend and i love to play with this mod.
One thing we noticed is that the game is much harder in true co-op. Probably because of the mess two players can do on screen, but also, we need to share items and it's way harder to build a good character.
We allready lower the enemy scaling.
Do you think it would be possible to share the effects of passive items (not trinkets)? I mean tears upgrade, stats up, etc...
Also, we like the idea that a ghost can still help (by atracting ennemies) but for now, this option is a bit OP.
Yes it make the game easier but not in a good way. Not really rewarding.
A good compromise could be that ghosts can attract ennemies but during a short period and with a cooldown.
Like that, the second player can still help and not get bored after dying.
If you are still working on it, that would be my suggestions.
Again thanks for the good work.
Bramblefire Jul 18 @ 10:22am 
Hey, I was wondering how I can get the tools to implement mod characters. Where are they?
codychristopher522 Jul 16 @ 2:49pm 
how do i get the screen thing to go away so i can do the co-op?
Dante Wildmist Jul 15 @ 3:25pm 
Brokes Samael Mod sad but i unsubscribe
Soop the Koop Jul 15 @ 2:18pm 
Hey so how do you revive someone in the devil rooms?
Sans Jul 6 @ 2:27pm 
Can i just plug 2 controllers to my laptop and play or do i need something else?
lolypopmaster11 Jul 5 @ 5:28pm 
i got a bug here i ulocked ??? but when i try to select him it gives me isaac and it does work with other characters this makes the forgoten/soul co-op mod impossible to play ;-;
ANormalPerson Jul 4 @ 3:25am 
Nevermind just found out, btw this mod is cool af.