Binding of Isaac: Rebirth Wiki

Added in Repentance

Mars is a passive item added in The Binding of Isaac: Repentance.


  • Double tapping a direction makes Isaac quickly dash in that direction.
    • Isaac is immune to damage from all sources during the dash, with the exception of Blood Donation Machine.png Blood Donation Machines, Devil Beggar.png Devil Beggars, and similar self-damage active items.
    • The dash deals damage equal to 4x Isaac's damage + 8.
    • The direction of the dash can be changed by holding another button.
    • The dash has an approximate 3 second cooldown.


  • The dash can be used to enter Curse Room Curse Rooms and open Spiked Chest Spiked Chests/ Mimic Chest Mimic Chests without taking damage.
  • The dash can destroy Shopkeeper Shopkeepers.
  • With a controller, tapping the joystick is rather inconsistent, and the dash can often activate by accident. Using the directional pad instead is recommended.
  • When Mars's dash is charged, Isaac will occasionally flash brightly, and visible steam will emit from his nose.
  • Extra care needs to be taken with this item, as tapping for precise movements too quickly will cause a dash.


  • Camo Undies Camo Undies: Can be used to deal damage without breaking the confusion effect.
  • Kamikaze! Kamikaze!: Kamikaze can be used without taking damage while dashing.
  • A Pony A Pony / White Pony White Pony: Lowers the dash cooldown to approximately 1.5 second.
  • Tainted Forgotten Tainted Forgotten: Tainted Forgotten will charge on double-tap if Tainted Soul is not holding him. This can be used to let Tainted Forgotten attack enemies from a resting position, or move him away from damaging hazards so Tainted Soul can pick him up.

In-game footage[]


  • Isaac looks like War War while holding this item. In Roman mythology, Mars was the god of war.


PC Hard mode only 7JS6 CB67 (Planetarium adjacent to spawn)

PC Hard mode only 9EG0 FL30 (Planetarium adjacent to spawn)

PC Hard mode only 6430 4492 (Planetarium adjacent to spawn)