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EQUIP a Nanoswarm grenade. FIRE to throw the grenade. Upon landing, the Nanoswarm goes covert. ALT FIRE to lob. ACTIVATE the Nanoswarm to deploy a damaging swarm of nanobots.
— In-game description

Nanoswarm is a basic ability for Killjoy.


Nanoswarm is a Deterrent ability that Killjoy must equip before casting. Upon casting, she throws a grenade forward that sticks as soon as it comes into contact with a horizontal surface. Killjoy can use Primary and Alt Fire to control the length of the throw; Primary Fire throws the grenade at long range whilst Alt Fire throws it at short range.

The grenade has no deploy time and can be activated as soon as it hits terrain; the delay between casting and activating is only affected by the time it takes for the grenade to reach its target location. If not activated immediately, the grenade will turn invisible instead and remain at its landing spot indefinitely. During the buy phase deployed grenades can be picked up to regain the charge, but once the round has started they cannot be recalled. Enemy agents who approach deployed grenades will be able to see them once they get within close enough proximity, also being able to hear it humming. Enemies can deal damage to the grenade and destroy it.

Upon being activated the grenade will windup before deploying a damaging swarm of nanobots in a cylindrical area of effect that pierces through terrain. The cylinder's ends are aligned vertically and the cylinder's center is positioned at the location where the grenade was activated. This means the nanobots deploy both above and below ground. Whilst this effect won't be seen when deployed on completely solid, horizontal ground, this becomes applicable when the grenade is activated near an area where the map's elevation changes and gets lower, be it a gradual slope or a steep vertical drop.

If Killjoy is killed during the round, any placed grenades will deactivate and reveal their positions.


Stat Value Confirmed
CustomReload Equip time 0.74 seconds Check MarkGame files
CustomReload Unequip time 0.7 seconds Check MarkGame files
Orbital Strike Buy Phase pickup range 4 meters Check MarkGame files
Warning Detection radius 5.25 meters Check Markv6.08
Windup Activation windup time Total 1 second Cross*
0.5-second windup Cross*
0.5-second damage delay Check MarkGame files
Orbital Strike Radius 4.5 meters Check Mark[a]
Damage Damage 1 per tick
Total 180
x0.5 multiplier to objects
Check Mark[b]
Incendiary Ticks/Tick Rate 45 per second
(1 every 0.022 seconds)
Check Markv1.11
Total 180 ticks Check Mark[b]
Duration Duration 4 seconds Check MarkGame files

* Values that are not marked as confirmed (i.e. values not provided explicitly in game or from patch notes) are only estimates. Whilst they may not be the true value, they have been tested so that they should be very accurate.
a Same distance as max Turret deployment range
b Verified using the Range's training dummy

Update History[]

  • Bugfix Buff Fixed bug with Killjoy’s utility not fading back into stealth when recovering from a disabled state


  • Nerf Nanoswarm reveal radius increased 350 >> 525
  • Adjustment Nanoswarm audio has been updated.
    • Audio loop now also turns off when disabled as a result of Killjoy being killed or suppressed.
  • Adjustment Improved feedback for the enemy when they destroy Nanoswarm.
  • Nerf Nanoswarm is now revealed when it is disabled.


  • Bugfix Nerf Will no longer deal more damage to destructible objects than intended.


  • Bugfix Buff Fixed Nanoswarm not dealing any damage to enemy utility
    • The correct fix is undocumented, with its official documentation in the patch notes instead claiming that this was only an issue when interacting with Chamber's utility
  • Bugfix Buff Will no longer take damage from allied Aftershock Aftershock, Showstopper Showstopper, or Paint Shells Paint Shells


  • Buff Health increased 1 HP >>> 20 HP
  • Buff Now deals damage to all enemy objects
  • Adjustment Damage multiplier against specific enemy abilities set to 50%


  • Bugfix Fixed a bug where Nanoswarm would sometimes disappear from the minimap


  • Buff Improved the system used to place Nanoswarm at targeted ground locations


  • Bugfix Buff Fixed a bug where picking up Nanoswarms during the buy phase would prevent you from purchasing a second charge


  • Buff Killjoy can now pick up deployed Nanoswarm grenades during the buy phase to get the charge back


  • Buff Range at which Nanoswarm can be detected decreased from 5m >>> 3.5m
  • Buff Damage increased from 40/s >>> 45/s
  • Buff Damage now ticks smoother and faster while in Nanoswarm, instead of in chunks of 10 every 1/4 of a second


  • Nerf Added a brief windup before damage begins
  • Nerf DPS reduced from 60 >>> 40
  • Nerf Visual effects have been added to make it easier to spot the grenade on the ground
  • Nerf Stealth audio range has been slightly increased