History GoodBadBugs / TheBindingOfIsaac

* Play as Tainted Samson, collect Berserk! and the Schoolbag, or Use a Soul of Samson, and collect Suplex. Now, grab ''anything enemy or bosses whatsoever'' while you're berserk. And watch them as they are instantly ''deleted'' after your berserk state expires. It can work on absolutely anything: from [[HarmlessEnemy a Black]] [[AwesomeButImpractical Fly]] to ''[[FinalBoss The Beast]]''. Just be careful to not use it against Dogma, as [[UnwinnableByMistake you'll be trapped in the boss room if it's deleted]].

As a game with a decade's worth of content, ''VideoGame/TheBindingOfIsaac'' is bound to have weird, funny, or [[BreadEggsBreadedEggs weirdly funny]] bugs and glitches that may or may not also be [[GameBreakingBug gamebreaking.]]

* Play as Tainted Samson, collect Berserker! and the Schoolbag, or Use a Soul of Samson, and collect Suplex. Now, grab ''anything enemy or bosses whatsoever'' while you're berserk. And watch them as they are instantly ''deleted'' after your berserk state expires. It can work on absolutely anything: from [[HarmlessEnemy a Black]] [[AwesomeButImpractical Fly]] to ''[[FinalBoss The Beast]]''. Just be careful to not use it against Dogma, as [[UnwinnableByMistake you'll be trapped in the boss room if it's deleted]].

* Using Jacob and Esau in co-op mode may also result in being able to move each character independently of each other with keyboard being able to move one and controller move the other. The infinite item exploit in Co-Op has since been patched in v4.0.1, and can no longer be used. However, two items will still spawn.

* Using multiple controllers and changing them while a game is in progress may cause several issues, such as confusing player slots and unlinking their deaths from each other. The control may also end up stuck on a third controller that is not available. It may also result in being able to move each character independently of each other with keyboard being able to move one and controller move the other.
The infinite item exploit in Co-Op has since been patched in v4.0.1, and can no longer be used. However, two items will still spawn.

* The Emperor? teleports Isaac into an extra Boss Room from the boss pool two floors deeper than the current floor. The boss will drop a reward, but the room has no trapdoor so Isaac cannot enter the next floor. The room has an exit door, which leads Isaac back to where he used IV - The Emperor?. While used on the Hush floor, this teleports him to a Monstro fight, defeating him will validate the completion mark for Hush, allowing an easier access to Delirium. See [[https://www.reddit.com/r/bindingofisaac/comments/nafbzn/used_the_emperor_on_the_hush_floor_and_when_i/ here]].

As a game with almost a decade's worth of content, ''VideoGame/TheBindingOfIsaac'' is bound to have weird, funny, or [[BreadEggsBreadedEggs weirdly funny]] bugs and glitches that may or may not also be [[GameBreakingBug gamebreaking.]]

* The Emperor? teleports Isaac into an extra Boss Room from the boss pool two floors deeper than the current floor. The boss will drop a reward, but the room has no trapdoor so Isaac cannot enter the next floor. The room has an exit door, which leads Isaac back to where he used IV - The Emperor?. While used on the Hush floor, this teleports him to a random boss fight, defeating the (often easier) extra boss will validate the completion mark for Hush, allowing an easier access to Delirium. See [[https://www.reddit.com/r/bindingofisaac/comments/nafbzn/used_the_emperor_on_the_hush_floor_and_when_i/ here]].

* The Emperor? teleports Isaac into an extra Boss Room from the boss pool two floors deeper than the current floor. The boss will drop a reward, but the room has no trapdoor so Isaac cannot enter the next floor. The room has an exit door, which leads Isaac back to where he used IV - The Emperor?. While used on the Hush floor, this teleports him to a random boss fight, defeating the (often easier) extra boss will validate the completion mark for Hush.

* When playing as the Forgotten, only the Soul can take Devil Deals and can only pay in Soul Hearts. However, if you take a deal that would kill the Soul and swap back to the Forgotten during the ItemGet animation, the Soul will merely be disabled and the Forgotten will live on. Once you collect a Soul/Black Heart, the Soul comes back. This is unintentional (as evidenced by the unintuitive nature of the trick), but it was caught in playtesting and Edmund decided to [[ThrowItIn keep it in]], feeling it was thematically appropriate.

* When playing as the Forgotten, only the Soul can take Devil Deals and can only pay in Soul Hearts. However, if you take a deal that would kill the Soul and swap back to the Forgotten during the ItemGet animation, the Soul will merely be disabled and the Forgotten will live on. Once you collect a Soul/Black Heart, the Soul comes back. This is unintentional (as evidenced by the unintuitive nature of the trick), but it was caught in playtesting and Edmund decided to ThrowItIn, feeling it was thematically appropriate.

* When playing as the Forgotten, only the Soul can take Devil Deals and can only pay in Soul Hearts. However, if you take a deal that would kill the Soul and swap back to the Forgotten during the ItemGet animation, the Soul will merely be disabled and the Forgotten will live on. Once you collect a Soul/Black Heart, the Soul comes back. It's hard to say whether or not this was intended (the unintuitive nature would imply it's not), but it has yet to be fixed and is a popular strategy for Forgotten runs.

* ''Wrath of the Lamb'' made it though that Curse Rooms only damage your character as he left them (usually, damage is received when entering AND when leaving the room).

** A bug that is not patched out, though, is the infamous Brimsnap glitch (named after the [[LetsPlay Let's Player]] [[https://www.youtube.com/user/bisnap?feature=watch bisnap]]): if you keeping tapping the button while firing the Brimstone beam, it will potentially ''double'' its damage ''and'' increase its area of effect.

* When playing as the Forgotten, only the Soul can take Devil Deals, and you die if it does. However, if you take a deal that would kill the Soul and swap back to the Forgotten during the ItemGet animation, the Soul will merely be disabled and the Forgotten will live on. Once you collect a Soul/Black Heart, the Soul comes back. It's doubtful this was intended.

* There was a bug where [[spoiler:???]] gained ''complete invincibility'' when he took a Full Health Pill. This invincibility would last until he picked up an item that would increase the maximum health of a normal character. It even counted for No Damage achievements. Eventually, it was patched out.

* The Backasswards challenge in ''Afterbirth+'' requires you to beat the game backwards, starting from the very long and very difficult fight against [[spoiler:Mega Satan]]. However, if you suspend the game, the boss will be unloaded, allowing you to resume and leave the room without a fight.

* As explained above, the Brimstone + Chocolate Milk combo was originally this, allowing you to spam blood beams all across the room for no charge delay whatsoever. However, this was quickly fixed for being too overpowered, and the resulting combo produced from it is now... [[PowerUpLetdown less than satisfactory]].
** A bug that is not patched out, though, is the infamous Brimsnap glitch (named after the [[LetsPlay Let's Player]] [[http://www.youtube.com/user/bisnap?feature=watch bisnap]])): if you keeping tapping the button while firing the Brimstone beam, it will potentially ''double'' its damage ''and'' increase its area of effect.

* After the Halloween Update, the Mr. Boom item's recharge bar got permanently stuck on full charge. That equals to an infinite supply of super-bombs! This one was fixed in the bugfix that quickly followed the Halloween update.

** A bug that is not patched out, though, is the infamous Brimsnap glitch (named after the [[LetsPlay Lets Player]] [[http://www.youtube.com/user/bisnap?feature=watch bisnap]])): if you keeping tapping the button while firing the Brimstone beam, it will potentially ''double'' its damage ''and'' increase its area of effect.

** A similar glitch that is currently not patched is that using a Portable Slot in a boss room after the boss is defeated, and getting a fly to buzz around the room. If you leave without killing it, the room will reset, allowing you to fight the boss again and get its item. This also works for other rooms such as secret rooms.

* It was possible to enter and exit Challenge Rooms at any time as long as your character could fly. In addition to allowing a player to enter Challenge Rooms without full health, it also allowed players to pick up the item in the room and then leave without fighting any enemies. This glitch was around since the game came out, to the point where it may have become an AscendedGlitch. However, the expansion ''Wrath of the Lamb'' made the glitch even more game breaking by including more items that gave flight, as well as advanced Challenge Rooms that always gave a major item. The second update to ''Wrath of the Lamb'' removed this bug entirely.

* If you enter a room with 3 charge points or more The Battery in V1.5 (the store retail version with Wrath of the Lamb included) will give you #6 a lot sooner than usual, and ''reset the counter'', allowing a further three charges, enabling item use in every room, if you have the patience.

* In ''Rebirth'', Items that deal damage to you when used are rendered impotent if you have Isaac's Heart--this unfortunately makes Sharp Plug useless, but you can now spam the IV bag without having to engage in door shenanigans.

* While not a true bug, but pretty close. using the special condition "poopy trail", earned by inputting the right code, will cause poop to appear on any tile you move over, if possible. Doing that and getting either Leo or Thunder Thighs, giving you the effect that any breakable terrain you step over will break instantly, will cause you to break the poop on the tile you're standing on, and generate it again immediately. with petrified poop this becomes an unending stream of coins and hearts that threatens to flood any room you enter.