Dark Marker

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Dark Marker
Dark Marker.png
Type: Semiautomatic
Quality: 1S Quality Item.png
Magazine Size: 12
Max Ammo: 250
Reload Time: 2.0s
DPS: 38.6 (uncharged)
Damage: Bullets: 13.5
Charged Particle: 40x2 (80)
Explosion: 60 (Close) 50 (Far)
Fire Rate: 0.20
Shot Speed: 32
Range: Infinity.png
Force: 20
Spread: 0
Sell Creep Price: 54 Money.png
Ammonomicon Entry
Big Bang
Fires two projectiles. If they meet...

Matter is composed largely of strong particles, and antimatter is composed of weak particles. When they meet, the strong particles overwhelm the weak particles and then explode in satisfaction.

This gun is the favorite gun of the Gunsling King, who somewhat inscrutably says it reminds him of his servant.

Dark Marker is a gun. The gun can be charged to fire a red projectile and a blue projectile at the cost of 10 ammo, both of which curve and meet at one point. If the two projectiles meet, they will create a large explosion and trigger a blank effect.


  • Synergy.png Antichamber - If the player has Antibody, Dark Marker's uncharged shots alternate between firing red and blue charged shots without consuming additional ammo. The shots travel straight and become slow-moving orbs after a short period of time, which can deal multiple instances of damage. If any red and blue shots/orbs touch, the blank effect is activated. The charged shot remains unchanged, and will still consume 10 ammo.
    • If the player has Backup Gun and the Synergy.png Antichamber synergy, then shots fired forward will always be blue and shots fired backward will always be red.
    • If the player has Helix Bullets and the Synergy.png Antichamber synergy, then all shots fired (Charged or not) in any direction will have the effect of charged shots.
    • If a player with the Synergy.png Antichamber synergy walks backward and forward in place while shooting normally, it's possible to make the slow-moving orbs collide frequently, causing a large number of blank effects.
    • The Synergy.png Antichamber synergy works well with Double Vision, as the weapon will always fire one red projectile and one blue projectile at the same time while these projectiles are close to each other, which can cause the blank effect and subsequent explosion to trigger rapidly. If the player also has Ice Cube on top of this, the large burst of damage from the rapid explosions from firing Dark Marker while Double Vision is active can recharge Double Vision almost immediately, allowing the player to almost always have the ability to double their damage output while using Dark Marker.
  • The blank effect will not reveal secret rooms.
  • The blank effect gains bonuses from Ammolets.
  • The blank effect instantly ignites flammable obstacles (such as cobwebs and oil) and destroys obstacles on the ground in a large radius.
  • Unlike most charged weapons, Dark Marker first fires an uncharged shot when the fire button is pressed. This can be avoided by firing while facing against a wall.
  • The uncharged shot fired when the player begins charging the weapon does not anger Bello.
  • If the player has the Synergy.png Friend to Gun and Bullet synergy, the secondary Dark Marker will continuously fire charged shots that trigger the blank effect.
  • Having items such as Chaos Bullets is a negative for this weapon, as the red and blue projectiles often have different bullet speeds.
  • Remote Bullets is a very good item for this gun, as the red and blue projectile will always meet (as long as neither hits an obstacle).
  • If the bullets of a charged shot fail to meet (due to an NPC's force field, for example), they will become orbs that pierce and deal multiple instances of damage, trailing off until hitting a wall.
  • The charged shot of this weapon can damage Cannonbalrog during his teleporting attack.


  • The mechanic of the charged shot is a reference to matter-antimatter annihilation, whereby 100% of the mass of the matter and antimatter are converted into energy. (It has a synergy with Antibody because of this)
    • Instead of strong and weak particles, in reality the strong force and weak force are two of the four fundamental forces, alongside gravity and electromagnetic force.
  • The Synergy.png Antichamber synergy might also be a reference to the game Antichamber.


See also[edit]