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Roach

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Roach SC2 DevGame3

A roach

The roach is a zerg ground unit in StarCraft II.

OverviewEdit

Roach SC2 Cncpt2

A roach

The roach is a particularly tough, armored breed which possesses a high-speed regeneration ability when burrowed. Roaches evolved from the fast-healing zantar slug of Garrxax[1] and in use by 2501, taking part in a battle on Shi.[2] Their ranged acid saliva attack is capable of penetrating neosteel and armor, and violently dissolving flesh on multiple entry points. This saliva is derived from the zantar slug and is expelled with considerable force through the muscles that surround the roach's salivary glands—highly specialized striated ducts that produce a unique enzyme that weaponizes the creature's already corrosive saliva.

If pressed into close quarters, roaches use scythe-like blades on their backs to dispatch the enemy. The hardness of these scythes allows roaches to scythe through neosteel and armor with ease.

The roach's metabolism is ten times greater than that of the zantar slug (increased through assimilation), and gained the ability to quickly regenerate even the most grievious wounds when burrowed. The absorbtion of soil compounds, especially rare earths and metals, has allowed roaches to develop extremely thick carapaces. Some Dominion scientists have theorized that the roach is not immune to the ravages of its acidic body fluids, and the creature's potent regeneration capabilities ensure tissue integrity in spite of constant corrosion.[1]

TacticsEdit

One on one, few are capable of taking on a roach and winning.[1] They are deployed when zerglings start to be thinned out and are sometimes supported by infestors.[3] When paired with zerglings, they can be nearly unstoppable against marines bereft of siege tank or bunker support.[4] Roaches are nearly impervious to small-arms fire, and nigh immune to flame-based weapons, and explosives and artillery are a must for terran forces when these creatures are deployed.[1]

Game UnitEdit

Roach
Roach SC2 Head1
Roach SC2 Rend2
Unit
Race

Zerg

Role

Medium ranged creature

Armament

Acid Saliva

Properties
Transport
size

2

Sight range

9

Production
Minerals

75 Minerals Terran SC1

Gas

25 ZergVespene SC2 Game1

Control

2 ZergSupply SC2 Icon1

Build time

27 Time SC2 Game1

Evolves from

Larva

Requires

Roach warren

Hotkey

R

Movement
Speed
  • 2.25 (3 with Glial Reconstitution) GlialReconstitution SC2 Icon1
    • 2.92 on creep (3.09 with Glial Reconstitution)
  • Burrowed 2 (2.6 under creep)
Acceleration

1000

Lateral
acceleration

46.0625

Deceleration

0

Creep
multiplier

x 1.3

Collision radius

0.625

Protection
Hit points

145
120 (Heart of the Swarm campaign only)

Hit point
regen/second
  • 0.2734
  • 5 (burrowed)
  • 10 (burrowed with Tunneling Claws) GlialReconstitution SC2 Game1
Armor

1

Type

Biological
Ground

Armor type

Armored

Acid Saliva
Damage

16

Targets
  • Ground
Cooldown

2

Range

4

Upgrade/level

+2 SC2ZergMissile

Claws
Damage

16

Targets
  • Ground
Cooldown

2

Range

0.1 (melee)

Upgrade/levels

+2 SC2ZergMissile

Meta
Target
priority

20

Kill score

150

Production
score

75

Roaches are strong against hellions, zealots, and zerglings, and weak against MMM, immortals, and ultralisks. Thors, stalkers, and siege tanks also pose a strong threat to roaches due to their bonus damage against armored targets.

They have no anti-air attack. Roaches inherit the roles of medium attacker and ambusher from the original StarCraft's hydralisk and lurker. To compensate for its lack of anti-air attack, it is common to see roaches combined with hydralisks. A common strategy is for roaches to absorb damage while hydralisks deal it.[5]

AttacksEdit

Roach SC2 DevGame2

Roaches attacking.

The roach is a ranged unit, giving it added utility at choke points.[6] The roach rises slightly when it attacks.[7] It also has a melee attack that it, like the hydralisk, performs at close range for the same damage as the ranged attack.[8]

AbilitiesEdit

RapidRegeneration Roach Regeneration
Notes

Roaches regenerate at 5 hit points/second when burrowed.[9]

The rate of healing increases with the Tunneling Claws upgrade to a rate of 10 hit points per second.[9]

The regeneration doesn't stack with the medivac dropship's healing ability.[10]

Edit
SC2ZergBurrow Burrow
Acquisition
Minerals

100 Minerals Terran SC1

Gas

100 Gas Zerg SC1

Evolution time

100 Time SC2 Game1

Evolved at

Hatchery/Lair/Hive

Requires
  • Lair
  • Hatchery (HotS only)
Hotkey

B

Usage
Activation/
Build Time

2 seconds to burrow, 1 second to unburrow Time SC2 Game1

Hotkey

R

Notes

Many zerg ground units may burrow, become invisible and may be revealed primarily by detectors, and may not move or attack. Exceptions are the roach, who may move while burrowed, the infestor, who may move and cast Infested Terran,[11] and the baneling which can detonate while burrowed.

Some units can unburrow via autocast, causing them to emerge and attack when an enemy moves into range.

The ability is not smartcast.

Edit

UpgradesEdit

GlialReconstitution SC2 Icon1 Glial Reconstitution
Evolved at

Roach warren

Hotkey

G

Properties
Minerals

100 Minerals Terran SC1

Gas

100 Gas Zerg SC1

Evolution time

110 Time SC2 Game1

Required

Lair

Notes

Increases roach speed from 2 to 3. This has no effect on burrowed speed.

Edit
GlialReconstitution SC2 Game1 Tunneling Claws
Acquisition
Minerals

150 Minerals Terran SC1

Gas

150 Gas Zerg SC1

Evolution time

110 Time SC2 Game1

Evolved at

Roach warren

Requires

Lair

Hotkey

T

Notes

The roach can move while burrowed. It moves faster when burrowed beneath the creep. Glial Reconstitution has no impact on burrowing speed.

While it can be researched earlier, Tunneling Claws cannot be used until burrowing has been evolved.

Tunneling Claws also increases the roach's burrowed regeneration rate from 5 to 10 hp/second.[9]

Edit
SC2 ZergMissileWeap Missile Attacks
Evolved at

Evolution chamber

Hotkey

A

Properties
Level

Level 1

Level 2

Level 3

Minerals

100 Minerals Terran SC1

150 Minerals Terran SC1

200 Minerals Terran SC1

Gas

100 Gas Zerg SC1

150 Gas Zerg SC1

200 Gas Zerg SC1

Evolution time

160 Time SC2 Game1

190 Time SC2 Game1

220 Time SC2 Game1

Required

Lair

Hive

Notes
  • Attack bonus for queens and zerg ground ranged units.
Edit
SC2 ZergGrndCara Carapace
Evolved at

Evolution chamber

Hotkey

C

Properties
Level

Level 1

Level 2

Level 3

Minerals

150 Minerals Terran SC1

225 Minerals Terran SC1

300 Minerals Terran SC1

Gas

150 Gas Zerg SC1

225 Gas Zerg SC1

300 Gas Zerg SC1

Evolution time

160 Time SC2 Game1

190 Time SC2 Game1

220 Time SC2 Game1

Required

Lair

Hive

Notes
  • +1 bonus to armor per level for zerg ground units.
Edit

Heart of the SwarmEdit

In the campaign of Heart of the Swarm, roaches can choose one of the following upgrades for each mission:

  • Adaptive plating (gains +3 armor when hp is below 50%)
  • Hydrochloric bile (gains +8 damage against light units)
  • Tunneling claws (can move at full speed while burrowed, burrowed regeneration rate increased by 100%)

Roaches may be evolved into either corpsers or viles after completing the required evolution mission.

DevelopmentEdit

Main article: Roach/Development

Roach StrategiesEdit

Zerg vs TerranEdit

Roach SC2 Head2

Roach profile

A roach/baneling combo is very powerful against terrans, as the roaches will soak damage, enabling the banelings to get close to the enemy and deal their high damage attacks.[12]

Zerg vs ZergEdit

Roaches and zerglings are used early in ZvZ matches. Roaches are a more defensive unit compared to zerglings. Cost for cost, roaches win against zerglings at chokepoints but lose in open areas. Later in the game, numerous roaches can defeat numerous zerglings even in open areas.[13]

As a game progresses, a roach/hydralisk combo can defeat a zergling/mutalisk combo.[13]

Zerg vs ProtossEdit

Roaches are a great way to defend an early expo against 2 Gate zealot push. Mass overwhelming roaches is also quite strong against a fast teching opponent, even one who goes air. Use roaches to soak up colossus damage until ultralisks or air units can support.

GeneralEdit

Roach SC2 Cncpt1

Concept art

Roaches, coupled with their speed and burrow move upgrades, make great harassment units at exposed bases.

Roaches are a great staple unit and have great value for cost, but take up control quickly. In direct encounters with enemy armies of equal supply, mass roach is more likely to lose.

Special Roach StrainsEdit

AcidBurns Cover1

A roach

ReferencesEdit

  1. 1.0 1.1 1.2 1.3 Blizzard Entertainment staff. 2010-07-24. Units: Roach. Blizzard Entertainment. Accessed 2014-20-08.
  2. Gerrold, David (w), Fernando Heinz Furukawa (p, i). StarCraft: Ghost Academy: Volume 3 (paperback binding). Tokyopop, March 8, 2011. ISBN 978-1427-81614-6.
  3. Overview: Zerg, accessed on 2011-01-13
  4. Kenyon, Nate. (September 27, 2011). StarCraft: Ghost: Spectres. Simon & Schuster (Pocket Star). ISBN 978-1439-10938-0.
  5. 2012-06-08, StarCraft II: Heart of the Swarm - Battle Report (Protoss vs Zerg). Blizzard Entertainment, accessed on 2012-06-21
  6. Karune. 2008-04-08. StarCraft II Q&A - Batch 34. Battle.net StarCraft II General Discussion Forum. Accessed 2008-04-08
  7. StarCraft. 2010-02-02. The programming team has added some impressive new unit movement animations to the game. Air units like the phoenix and banshee bank on turns, roaches and hellions both rise when they start moving, and tanks slightly bob when stopping. Facebook (StarCraft). Accessed 2010-02-03.
  8. Blizzard Entertainment. StarCraft II: Wings of Liberty. (Activision Blizzard) (in English). July 27, 2010
  9. 9.0 9.1 9.2 Blizzard Entertainment. StarCraft II Map Editor. (Activision Blizzard) (in English). July 27, 2010
  10. Karune. 2009-02-18. StarCraft II Q&A - Batch 49. Battle.net StarCraft II General Discussion Forum. Accessed 2009-02-18.
  11. Blizzard Entertainment Staff. 2010-07-24. Infestor. Blizzard Entertainment. Accessed 2010-07-24.
  12. Hammy. 2009-04-04. ESL Finals Paris StarCraft II Gameplay Impressions. StarCraft Legacy. Accessed 2009-05-18.
  13. 13.0 13.1 Karune. 2008-08-18. StarCraft II Q&A - Batch 43. Battle.net StarCraft II General Discussion Forum. Accessed 2008-08-18.

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