Big Ol' Bomb

Set a timed charge with a big blast that knocks down nearby foes. This skill blast finishes twice. — In-game description

Big Ol' Bomb

Profession

Engineer (skill list)

Kit

  Bomb Kit

Game link

API

5813

“

0.5½  20  

Big Ol' Bomb

Set a timed charge with a big blast that knocks down nearby foes. This skill blast finishes twice.

 Damage: 1,066 (3.0)^?

 Damage: 4 (0.01)^?

 Knockdown: 3 seconds

 Number of Targets: 5

 Fuse Time: 3 seconds

 Radius: 360

 Explosion

 Combo Finisher: Blast

 Combo Finisher: Blast

 Defiance Break: 300

— In-game description

Related traits

Explosives

• Short Fuse — Gain fury when you hit a foe with an Explosion.
• Steel-Packed Powder — Explosions cause vulnerability.
• Explosive Temper — Explosions grant stacking ferocity when they hit.
• Shrapnel — Explosions have a chance to cripple and cause bleeding on hit.
• Big Boomer — Deal increased strike damage to foes with a lower health percentage than you. Hitting with an Explosion heals you over a few seconds.

Inventions

• Bunker Down — Create a proximity mine at your target's location and a med kit at your location when you disable an enemy.

Alchemy

• Equal and Opposite Reaction — Gain quickness and stability when you disable an enemy.
• Chain Reactivity — Gain barrier when you successfully finish a combo field with a leap or a blast. Every third successful finish grants you might and a larger barrier that is shared with allies.

Tools

• Lock On — Striking a stealthed foe triggers Invisible Analysis. Disabling a foe triggers Controlled Analysis. Disables include stun, daze, knockback, pull, knockdown, sink, float, launch, taunt, and fear.

Scrapper

• System Shocker — Disabling a foe grants barrier to nearby allies. Your function gyro dazes foes when cast. Disables include stun, daze, knockback, pull, knockdown, sink, float, launch, taunt, and fear.
• Kinetic Accelerators — Grant boons to nearby allies when you successfully combo a field with a blast, leap, or whirl finisher. Your function gyro is now a blast finisher. Whirl finishers can only trigger this trait once per interval.

Amalgam

• Mercurial Tendencies — Disabling an enemy reduces the cooldown of Evolve.

Notes

• As long as Fire Bomb or Smoke Bomb are used immediately before or after this skill, the blast finisher will activate the respective combo field.

Version history

For a detailed skill history, see here.

Patch	Changes
June 02, 2026	This skill now uses the correct weapon strength.
June 24, 2025	This skill has been moved into the Bomb Kit, replacing Glue Bomb. This skill now knocks down enemies instead of launching them and combos a blast finisher twice. Increased the radius from 300 to 360. Increased the power coefficient from 2.475 to 3.0 in PvE only.
February 28, 2022	End of Dragons release: (Undocumented) Added tooltip fact Defiance Break.
February 25, 2020	Competitive content update: Reduced recharge from 25 seconds to 20 seconds. (Competitive split) Reduced power coefficient from 2.475 to 0.01.
August 08, 2017	Path of Fire pre-patch: Increased damage by 10%.
February 22, 2017	This skill is now affected by Short Fuse. The visual size of this bomb has been increased by 33%. Skills that count as explosions for the traits Steel-Packed Powder, Explosive Powder, and Shrapnel are now marked with a skill fact.
October 18, 2016	The knockdown duration of this ability has been increased from 2 seconds to 3 seconds.
June 23, 2015	Specialization update: Recharge reduced from 30 seconds to 25 seconds.
October 07, 2012	This skill has been updated to be a blast finisher.
August 28, 2012	Game release: Big Ol' Bomb has been added to the game.