Hard mode

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Hard mode changes the gameplay compared to Normal in some ways to make it more difficult. When playing in Hard mode, a small red pentagram (Hard mode only) appears on the HUD, below the pickups.

Differences[edit | edit source]

  • 2-3 more rooms generate each floor.
  • Removed in Repentance Standard rooms with a difficulty of "1" cannot generate.
    • Added in Repentance Standard rooms with a difficulty of "1" have a reduced chance of appearing.
    • Most rooms with this difficulty are very easy, making difficult rooms more common.
  • Enemies have a base 20% chance to become Champions instead of only 5%; additionally, they only award pickups 33% of the time.
  • Removed in Repentance Hearts are 66% less likely to drop after completing a room.
    • Added in RepentanceHearts are 33% less likely to drop after completing a room.
  • Removed in Repentance Only champion bosses will drop hearts; normal bosses will not.
  • Floors are more likely to have curses.
  • Blood Donation Machines only give out one coin per use.
    • Added in Repentance Also applies to IV Bag.
  • Beggars require a minimum of 6 donations before paying out.
    • Added in Repentance This doesn't apply to Bomb Bums or Key Masters.
  • Added in Repentance Lower levels of shop can appear even if the store upgrades have been unlocked.
  • Added in Repentance Certain enemies and bosses have increased shot and movement speed.
  • Added in Repentance15►Dogma Dogma does not provide the effect of15►The Wafer The Wafer.

Unlocks for Hard Mode[edit | edit source]

Character Mom's Heart Added in Afterbirth All completion marks
Isaac Lost Baby Buddy Baby
Magdalene Cute Baby Colorful Baby
Cain Glass Baby Picky Baby
Judas Shadow Baby Belial Baby
??? Dead Baby Hive Baby
Eve Crow Baby Whore Baby
Samson Fighting Baby Revenge Baby
Azazel Begotten Baby Sucky Baby
Lazarus Wrapped Baby

Added in Repentance Bethany (Without losing a life)

Dripping Baby
Eden Glitch Baby Cracked Baby
The Lost -0- Baby Godhead
Added in Afterbirth Lilith Goat Head Baby Dark Baby
Added in Afterbirth Keeper Super Greed Baby Sale Baby
Added in Afterbirth † Apollyon Smelter Apollyon Baby
Added in Afterbirth † The Forgotten Marrow Bone Baby
Added in Repentance Bethany Wisp Baby Hope Baby
Added in Repentance Jacob and Esau Double Baby Solomon's Baby
Added in Repentance All non-Tainted characters Mega Mush
Added in Repentance All characters Death Certificate

Trivia[edit | edit source]

  • Before update 1.03, the reduced drop-rate affected all pickups (not just Red Hearts).
  • For update 4.00 hard mode also reduced the amount of tinted rocks appearing. This was removed with 4.01 a few days later.
  • Most Hard mode unlocks are co-op babies, with the notable exceptions of 15►Godhead Godhead, Added in Afterbirth †15►Smelter Smelter, Added in Afterbirth †15►Marrow Marrow, Added in Repentance15►Mega Mush Mega Mush, Added in Repentance15►Death Certificate Death Certificate and the character Added in RepentanceBethany.
  • 15►Godhead Godhead's unlock requirements were extended in the Afterbirth DLC (and further extended in the Afterbirth+ DLC) due to the addition of more completion marks, but it can still be unlocked in the base game using the same method.

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