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IsaacHD Isaac Rebirth

Art by Edmund McMillen
Starting Items
Pickups 1 Key
Items Lucky Foot

And Adam knew Eve his wife; and she conceived, and bare Cain, and said, I have gotten a man from the Lord.

–Genesis 4:1

Cain (Rebirth)
Cain App
20px-HUD Red Heart20px-HUD Red Heart
Starting Items
Pickups 1 key
Paper Clip (unlocked in Afterbirth)
Items Lucky Foot

Cain is an unlockable character in The Binding of Isaac. He is unlocked by having a total of 55 coins at any one time in a playthrough (not just attaining 55 or more coins in a playthrough).


Cain is missing his left eye, so he'll only be able to shoot with his right one. This also makes it impossible for him to shoot tears (including special tear effects like Brimstone) while using Technology 2 (though its damage will be significantly buffed). Chemical Peel gives a 50% chance of shooting a blood tear instead of a normal one. However, he still shoots the standard multiple tears with Mutant Spider and The Inner Eye.

Cain's Lucky Foot gives him roughly a 50% chance of winning the Shell Game rather than the normal 33% chance. The chances of the Slot Machine giving items is also increased. This makes it very easy for Cain to "farm" the Arcade room for items and money. Using the Blood Donation Machine to make money to spend on the Shell Game/Slot Machine will frequently be net-positive for Cain, and he can continue spending money and hearts until either the Slot/Blood Donation Machine or the Shell Game vendor explodes/provides Skatole.

The Lucky Foot also turns negative pills into positive pills, but will not affect neutral pills such as Pretty Fly, Telepills, Bombs are Key, I Found Pills, Puberty, Bad Gas, or Friends Till The End. This makes Mom's Bottle Of Pills a much better item. (Does not apply in Rebirth and Afterbirth).



  • Keeping consistent with his eye patch, Cain's tears only shoot from his uncovered eye with a slightly lopsided trajectory path.
  • Even though he has an eye patch, he still cries from his covered eye, this might be because Isaac himself is wearing a eye patch.
  • Cain and the familiar Abel are a reference to the Biblical brothers of the same name. His eye patch might hint at Cain's sinful nature and the murder of his brother, after which he was uniquely cursed to walk the Earth forever, but never be harmed. Hence the Lucky Foot and it's effect on pills.
  • He is referred to as the "thief" in the Unholy Edition art booklet, with increased speed, less HP, Lucky Foot, and a key (presumably a reference to a lock pick).

Related Achievements

Cainseyepatch "Cain's Eyepatch" - Hold 55 Coins at once in a single playthrough.
Bag "The Bag" - Kill Mom's Heart with Cain.
TheBombBag "The Bomb Bag" - Kill Satan with Cain.
Abel "Abel" - Kill Isaac with Cain.
Cains Eye "Cains Eye" - Kill ??? with Cain.




Cain starts with the Lucky Foot, medium health, and high damage output. Cain's strength lies in his versatility, his relatively balanced attributes make him well-suited to a variety of play styles.



The easiest way to unlock Cain is to use the Slot Machine until it explodes and provides A Dollar, which will instantly unlock him upon pick-up. The 2 Of Diamonds Suit Card is also useful, since it doubles the player's current Coins. Another strategy is to use the Blood Donation Machine while playing as Maggy.


  • Cain is an excellent character to start with if you want to assemble the Pill Popper combo (Mom's Bottle of Pills + 9 Volt, The Battery, or the Habit), as his Lucky Foot guarantees you only positive or neutral pill effects. Mom's Coin Purse is useful for the same reason. D20 can prove immensely useful in the Arcade or coin-knocking enemies as large amounts of pickups are spawned in a single room and rerolling D20 has quite a chance to spawn a pill.
  • Cain is tied with Eve for highest starting speed. Use this to your advantage; Cain is a capable hit-and-run character. Zip into combat and zip out again; your low range won't even matter if you can dodge well (and if you can't, Cain's a good character to practice with; he's more forgiving of mistakes than Judas).
  • Cain's hit-and-run playstyle allows him to make use of burst-damage tears, i.e. Mutant Spider.
  • Always go for the shell game in the Arcade first; the Lucky Foot means that you have a higher chance of winning the shell game than the slots.
  • While in an Arcade, try to use the Blood Donation Machine to convert any leftover hearts you win into coins. Don't be afraid to donate health until you're down to one or two hearts, since the donation machine will often explode and leave the Blood Bag as a reward. Doing this for a few levels significantly raises Cain's health and therefore especially helps making deals with the devil more feasible.
  • Soul Hearts can offset Cain's lack of durability; as always, keep an eye out for Tinted Rocks and blow them up.
  • As Red Chests have a chance of dropping 2 pills, Curse Rooms have higher chance of paying off.
  • If you find a Fortune Telling Machine, use it as much as possible, as Lucky Foot gives 100% chance of item drops from it.


Good Items:

Bad Items:

  • PHD  (redundant with your starting item, although it does identify pills before you use them, along with the healing)

The Binding of Isaac characters
Playable Characters
Isaac scribble Rebirth

Magdalene scribble Rebirth

Cain scribble Rebirth

Judas scribble Rebirth

Eve scribble Rebirth

BlueBaby scribble Rebirth

Samson scribble Rebirth

Lazarus scribble

Eden scribble

Lost scribble

The Lost
Azazel scribble

Lilith scribble

Keeper scribble

Old Man Keeper menu

Old Man
Non-Playable Characters

Normal Beggar
Devil Beggar Rebirth

Devil Beggar
Key Beggar Rebirth

Key Beggar
Bomb bum

Bomb Bum
Shell Game Beggar

Shell Game Beggar

Laughing kid
Minor characters
The Legend of Bum-bo characters
Playable Characters
More characters coming soon...

Start a Discussion Discussions about Cain

  • What's an easy way to unlock Cain without the cheat engine

    10 messages
    • Itomwright wrote:If you have 15 coins and are in the shop, try purchasing the Piggy bank. Everytime you're damaged you drop 1/2 coins. Damnit...
    • Just keep playing, i had about 30 coins at 50% in the game, found a vault, and then used a card to double all my items, i had 99 coins and got cain.
  • Charecter

    4 messages
    • Arguably, Judas is better if you're better at the game, but Cain is my favorite character as well.
    • IMO Azazel is best. Instant flight, high dmg brimstone, and if you're decent, the range isnt an issue.

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