The Binding of Isaac: Rebirth

The Binding of Isaac: Rebirth

Fiend Folio: Reheated - 500 New Monsters!
1,974 Comments
peas  [author] 12 hours ago 
mod is too easy. make it harder pls?
Sensei Le Roof Dec 8 @ 5:25pm 
Is China an upcoming character? You might wanna do something about the Horse Push-Pop spawning regardless who I'm playing.
Phosphor slimes mika1599 Dec 6 @ 4:27pm 
bro what (ms 37) [ MOD ms 1023] your not Fiend Folio Reheated; bette now:steamthumbsdown:
maryana Dec 5 @ 11:19am 
крутой мод
alex Nov 29 @ 9:54pm 
wonder if this will work unupdated since RGON just got REP+ support...
Higo Nov 24 @ 7:15am 
muito bom mod mas não funciona com o mod do personagem andromeda, daria pra fazer o mod funcionar com ele?
TerraZel Nov 23 @ 2:24am 
я пукнул
Forgorren Nov 21 @ 3:17pm 
i have a visual bug where curse of the unknown shows that i have 4 diffrent holy mantles, and when i have diffrent holy mantle like the one from holy card when used instead of it having the visual of holy card holy mantle it has the normal one
Papa Alpha Nov 20 @ 10:09am 
not entirly sure if its this mod since i can't see all the mod's enemies but there is an enemy in the corpse map which fills out gaps in the floor, the issue with that is it softlocks you, killing them does not open the room and ruins the run
Rubber Ducky Nov 20 @ 8:06am 
I feel like Fient would make a good challenge character.

Also how best to support your work, in the rep+ etc update?
Panglot Nov 13 @ 5:56am 
Amazing content, but the performance is abysmal at points. The CPU gets throttled somehow, the FPS drops to 20 or 10 even at places.
BUTT BURGLAR Nov 9 @ 6:29pm 
good mod
I N C I - Nov 4 @ 8:07pm 
is this mod will ever get optimized so it won't get laggy? :slugcatsleep:
Drevk7846 Nov 1 @ 4:16pm 
cacophobia made me ♥♥♥♥ my pants 10/10
Revalopod Oct 29 @ 10:50pm 
Boss rush wave counter for one.
so which type of mods wouldn't be compatible with this one?
Pleb 4 Life Oct 29 @ 6:30am 
Im not sure why but in the last couple days, i've had the small 'Smidgen' enemies stop attacking me, which makes them pretty much invincible unless i happen to have spare bombs on me
gunns22 Oct 27 @ 2:43pm 
Heya. Why don't any of the Fly enemies become Friendly when I have the Beelzebub transformation? The only reason I noticed this was because I was throwing my head against the wall trying to beat Solar System with this mod installed, but it's still getting on my nerves.
Deth-XIII Oct 25 @ 12:19pm 
one of the best Isaac mods, period
just one massive issue, it gets laggy fast, especially when running it along other big mods
crossing fingers for the upcoming massive update to fix that
Newgel Oct 25 @ 11:09am 
any chance we can get a standalone version that only adds the items?
Fulminman Oct 24 @ 1:37pm 
too much laggy ç_ç
Walter Oct 14 @ 6:33pm 
removing the item from the files fixes it i guess :rage:
Walter Oct 14 @ 5:46pm 
theres a glitch with tmtrainer where if empty book is used in a tmtrainer item it softlocks you, plz fix
Bon Bon Oct 13 @ 1:37pm 
I love how much more variety and challenge the mod adds to the game, and there's some really cool ideas present as well
The only thing truly holding the mod back is the performance tax. I hope Reloaded, above all else, optimizes the code a bit
Otherwise, mod is cool and goode
erkyp3rky Oct 12 @ 11:39pm 
frog guy knows whats up
Frog Guy Oct 12 @ 10:29am 
Waaaaaaay too ambitious for its own good. There are tons of really cool ideas and enemies but there is borderline zero tuning. There are rooms that feel like classic rebirth, there are some that are a little difficult but fair and then there are rooms that destroy half my health and have me going "How is this on Caves 1???".
I really wish I could have a version that cuts out anything that doesn't benefit the game as a whole. That is more for a selling product tho, it's basically impossible for a modding team to kill their darlings...
TH3V01D Oct 6 @ 12:54am 
The settings I change in the dead sea scrolls menu return to default upon restarting the game! How can I make them save, does anyone know?
Pozy Oct 2 @ 4:03pm 
does this work with rep+ ?
Keliqub Sep 29 @ 5:15pm 
I'm getting a visual bug where enemies like the Bowler (and Striker / Striker Ball), when the bowler throws its head, the head sprite glitches up and down (visually) while moving, but stops glitching when it stops. With the Peak-A-Boo, when its eye comes out, same thing happens. Can someone help me?
erkyp3rky Sep 27 @ 9:00pm 
id argue the consistency case in a different way. @penguin take for example poops and fireplaces in base game. theyre distinctly different and there are floors that replace either or. burning basement for example, as far as im concerned, replaces poops upon spawn with fireplaces. you wont see poop natively spawn there. try treating beehives similarly as a new obstacle.
GapeHole Sep 27 @ 7:29am 
no offense but what are you doing complaining about having to relearn things on a overhaul mod it’s literally gigantic and
changes up most of the gameplay of course you’ll have to relearn things isn’t that the point? I know there is a lot of content mods but with the amount of enemies and new room layouts you’ll have trouble if you don't relearn and the whole point of the mod is to make all the floors feel different and play different you just gotta learn them individually that’s the cost of the mod I guess
penguin Sep 26 @ 1:11pm 
so, I tried this mod recently, and I'm uninstalling for one reason specifically, that being that poop and rocks seem to be changed into completely different objects in each area?
The only issue I have w this is, well, two things actually, one is that it kinda makes me need to relearn each area from scratch, as I no longer know what each piece does or how it interacts with any other, if I have a poop related item, do beehives trigger that for example? I feel like they shouldn't, but the area seems to have no other poop like items around so they must right?
my other issue is that with the other thing, it also makes me unsure of even the most basic question of "can this be destroyed by a bomb?" I have tried to bomb things I thought were bombable multiple times to no avail, lol ndfkdnsjkfs

but yeah, just thought I'd post in whatever this is as feedback or something, idk

on the positive side, the section in the options for "tracking" was utterly hilarous lmao
суперскотч Sep 26 @ 9:47am 
why the hell my health containers became invisible????????
mata Sep 25 @ 4:23am 
laggy ass mod, ♥♥♥♥♥♥♥♥ optimized
HiGh PrioRity PlaYer Sep 22 @ 7:46pm 
The BEST content mod for Isaac.
Excellent sprites of EVERYTHING in the game, and better in combination with Meep's Monster Resprite mod. A lot of content to explore, waiting for next update :steamhappy:

Works without problems on Repentance+
I hate fcking Meltdown boss :repoop: (skill issue)
krystal2934 Sep 21 @ 8:31am 
idea mod legendary monsters
abrahamovicff Sep 16 @ 3:37pm 
mucho lag ff
Tohru-Chan Sep 10 @ 8:28pm 
repentance + isn't yet compatible with huge mods like this one, so expect not to work or constant crashes untill the people working on the game come up with a stable version of repentance + and when modders will bi able to come with a version for that.
faltan 32 dias para navidad Sep 10 @ 1:14pm 
crashes in the new version :)
Vanilla Velvet Sep 8 @ 10:46pm 
wish there was a standalone mod that only added the fiend folio items, the main fiend folio seems to overwrite my other reskin mods
andrianburdier Sep 7 @ 12:04pm 
so good
:resmile::steamthumbsup:
Jaxx - pshoooo Aug 28 @ 4:21pm 
i imagine i'm the first person in the entire world to ever have had this issue, but i took Shard of Glass and used the tarot that gives you key shots in exchange for costing keys to fire, and every single shard of glass blood tear drains a key making it functionally impossible to actually gain them back, likely just an oversight
Revalopod Aug 26 @ 6:29am 
Download stageapi
snowtrp Aug 25 @ 9:35pm 
hey i am trying to play this mod but it saying that there is stage api missing any idea of what to do
l0v3rm4n69420 Aug 25 @ 7:35pm 
especially in later floors, be careful of enemies that hide, or have I frames.
lato Aug 25 @ 4:23am 
had a run where i encountered some really strange bugs. i'd have rooms just be unable to clear properly, despite the enemies all being dead. some rooms, the enemies would be unkillable. these glitches happened on cathedral and chest floor. i do have other mods installed, but i don't see why any of them would affect this. almost all of them are just visual/QOL mods. seed was ZHWH JPXD , and i was playing cain. 100% savefile if that matters
Revalopod Aug 14 @ 9:59am 
Eh, can't agree with that. Quality on it's own doesn't mean much. In FF there are two quality 4 boss items but they feel more like mid quality 3 level. One is +0.7 damage and +0.5 tears, and the other is +0.9 damage and a soul heart and less than a second of enemy freeze. That's not overpowered at all; they feel inline with vanilla Isaac item balancing imo. In fact, there are many quality 3 items in the vanilla game that are better. FF barely adds any Q4 items that are normally obtainable, the ratio is probably lower than the vanilla game, and the ones it does add aren't even that powerful compared to vanilla Q4 items.
And before Repentance, Magic Mushroom was in boss pools and that's way stronger than any boss item from FF.
concept8192 Aug 14 @ 8:07am 
i didn't say it was flash isaac BS but that doesn't make it good either
and vanilla isaac is actually really balanced now, you should not be able to get q4 items so easily. fiend folio added a Q4 to the boss pool, they're insane and not in a good way
Revalopod Aug 14 @ 6:14am 
The enemies are great, all 500+ of them. If you go back and play flash Isaac, you'll see what real BS feels like. This mod actually has effort put into playtesting so every enemy and room is deliberate and fair. It's actually better than the vanilla game in that regard. So the only complaint I can agree with is that this mod makes the game too easy.
l0v3rm4n69420 Aug 13 @ 8:46pm 
its unbalanced as hell


have you even played TBoI? This isnt the game to play if you want balance XD