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This article or section contains information derived from Co-op Missions, and should not be considered part of the official StarCraft storyline.

"None will escape the area of impact!"

The Earthsplitter ordnance is a Terran Dominion artillery platform. It can fire traditional salvos at long range, or utilize shells contaminated with radiation or psychoactive drugs at global range. It can be manned by Dominion troopers and Dominion laborers for faster reloading times.

In the timeline where Arcturus Mengsk survived the Second Great War, Earthspliiter ordnance platforms were constructed on the field for use against the armies of Amon.[1]

Game Structure[edit | edit source]

The Earthsplitter ordnance is a offensive artillery platform available to Arcturus Mengsk in Co-op Missions upon reaching Level 3. It has considerable range, which can be enhanced by upgrades at the engineering bay. Earthsplitters will fire randomly in the selected target area of a bombardment.

While the Earthsplitter ordnance itself costs no supply, by itself the platform fires at a rate of once every 30 seconds. This can be lowered by garrisoning Dominion troopers and Dominion laborers inside it, the the following firing rates:

  • 15 (with 1 garrisoned unit)
  • 10 (with 2 garrisoned units)
  • 7.5 (with 3 garrisoned units)
  • 6 (with 4 garrisoned units)

As such, it is important to have at least 3 or 4 units within each Earthsplitter to ensure a steady rate of fire. Alone these platforms do not do much, but in larger numbers they can continually shell an area for massive damage, aided by the random nature of their bombardments. Sufficient Earthsplitters can level incoming attack waves as they approach.

In addition, Earthsplitters can be salvaged for their full cost. This means that on maps where objectives may end up out of range, these platforms can be "leapfrogged" forward to an area where they can fire on the objective. The Earthsplitter's attack can be targeted through the fog of war, and briefly give vision of the area targeted.

The additional use of the Earthsplitter is for use with the Contaminated Strike calldown. Unlike the normal Bombardment, this calldown has unlimited range, but uses all Earthsplitters deployed. After around 6 Earthsplitters however, the Contaminated Strike zones begins to overlap for no additional effect.

Upgrades and Abilities[edit | edit source]


Bombards a target location, randomly delivering payloads near that location, that deal 100 damage to enemy ground units.

Hotkey B
Cooldown 30 seconds

Each garrisoned units reduce the ability's cooldown:

  • 1 unit reduced by -50%
  • 2 units reduced by -66.67%
  • 3 units reduced by -75%
  • 4 units reduced by -80%
Campaign Acquisition
Unlock Initially available.

Salvages this structure, removing it and returning 100% of its mineral and gas value cost. Salvage takes 5 seconds to finish. Warning: once Salvage is triggers, it cannot be canceled.

Hotkey V
Cost 5 seconds
Neosteel Fortified Armor

Increases the life and armor of Supply Bunkers, Missile Turrets and Earthsplitter Ordnances by +200 and +2 respectively.

Campaign Acquisition
Unlock Initially available.
Purchased from Engineering bay
Hotkey S
Cost 100 Minerals 100 Vespene gas 60seconds
Hemispheric Accelerants

Increases the range of the Earthsplitter Ordnance's Bombardment ability by 25.

Campaign Acquisition
Unlock Reach Mengsk Level 6.
Purchased from Engineering bay
Hotkey B
Cost 150 Minerals 150 Vespene gas 90seconds
Contaminated Strike CA Icon.png
Contaminated Strike

Loads all your Earthsplitter Ordnance with an experimental payload to target any location on the map. Payloads randomly land near the target location, saturating the area in Irradiated Biomaterial and causing all enemies who enter to take 5 damage per second for 10 seconds. Affected units cannot Cloak.

Psychoactive Payload: Contaminated Strike now cast Fear on enemy units on impact, causing them to run around in panic for 5 seconds.

Toxic Tyrant: Reduces the Contaminated Strike cost by 20% and its cooldown by 66%. Increases the Fear effect duration by 200%. Irradiate effect additionally increases damage received by 25% and deals 6.25 damage per second.

Hotkey Ctrl+X
Cost 25 Energy
20 (with Toxic Tyrant) Energy
5 seconds
Duration 5 (Irradiate cloud) seconds
5 (Fear effect, up to 15 with Toxic Tyrant) seconds
10 (Irradiate effect) seconds
Cooldown 30 seconds
10 (with Toxic Tyrant) seconds

Contaminated Strike deals summary 50 damage and stacks up to three (summary 150) +25 damage when the enemy units are in the Irradiate cloud (62.5 damage per stack (summary 187.5) +31.25 damage when the enemy units are in the Irradiate cloud with Toxic Tyrant).
Mastery: +0.05 (+0.0625 with Toxic Tyrant) damage per second per Terrible Damage mastery point. Up to a maximum 6.5 damage per second, deals summary 65 damage per stack (195 for three stacks) +32.5 damage when the enemy units are in the Irradiate cloud (8.125 damage per second, deals summary 81.25 damage per stack (243.75 for three stacks) +40.625 damage when the enemy units are in the Irradiate cloud with Toxic Tyrant)

Campaign Acquisition
Unlock Reach Mengsk Level 4.
Required Earthsplitter ordnance (Launch 1 experimental payload per Ordnance)

Notes[edit | edit source]

The model of the turret is taken from the turrets that surround Korhal Palace in the Heart of the Swarm mission "The Reckoning."[2]

References[edit | edit source]

  1. Blizzard Entertainment. Co-op Missions. (Activision Blizzard). PC. Arcturus Mengsk (in English). 2019.
  2. Blizzard Entertainment. StarCraft II: Heart of the Swarm. (Activision Blizzard). PC. Mission: Heart of the Swarm, The Reckoning (in English). 2013-03-12.
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