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Image displaying the choice between the Raptor and Swarmling strains of Zergling One of the first choices in the HOTS campaign is between Raptor and Swarmling Zerglings.

Raptors just look cool and attack faster, but Swarmlings could save a base as they mutate faster and in groups of 3 instead of 2.

What are the advantages of each? What is the best mutation depending on what type of Zergling I chose? What about other abilities that help each? (e.g. Kerrigan levels)


Adrenal Overload: +50% attack speed

Hardened Carapace: Gain an additional 10 hp

Metabolic Boost: +60% movement speed.

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4 Answers 4

up vote 11 down vote accepted

You already summed it up rather nice I guess. ;)

I haven't had time to dab too much into the campaign yet to be honest, but it's essentially your decision how you'd like to get the additional damage:

  • With the Raptors you'll get more damage and mobility on your existing two Zerglings per egg.

  • With the Swarmlings you get more damage in the form of a third Zergling per egg (and essentially faster replacements).

Overall, both should provide you with a comparable damage boost.

If you like micro managment and don't have any issues moving even single units to avoid damage as much as possible, I'd pick the Raptors (especially if you like hit & run attacks). On the other hand, if you prefer the brute force approach, without having to worry about losing a few of your units, then the Swarmling might be the best option for you (because you can replace them faster and you lose less per unit lost).

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Raptors have a Zealot-like "Charge" ability, if I am remembering correctly. –  Raven Dreamer Mar 12 '13 at 12:14
Raptors can jump cliffs like Reapers, as per the starcraft wiki links included in the question. it's also worth noting that swarmlings will count as 1.5 control whereas raptors should count as 1 –  turbo Mar 12 '13 at 14:43
Oh nice, I was quite disappointed they cut that from initial release. Updating the answer. :) –  Mario Mar 12 '13 at 14:56
Hard choice! Raptors remind me of reapers from Terran so i just had to go with them! –  Seravy Mar 12 '13 at 16:33
Raptors also have a +2 damage bonus –  Raven Dreamer Mar 13 '13 at 12:15
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While Mario's answer does a good job explaining the raw differences between the two types of 'ling, I think it bears consideration the possible synergy of both types as well.

Zergling Reconstitution

For instance, my favorite Kerrigan passive ability is "Zergling Reconstitution". As your zerglings die, you will get them back, at a rate of 10 per 30 seconds.

What this means, in practice, is that you only need to make zerglings once - afterwards, you simply wait for your zerglings to respawn on their own. The combined effect of this is that you will morph very few zerglings in campaign maps.

What this means in practice, is that the Swarmling evolution is of limited use - you can make zerglings fast, and in great numbers... but if your zerglings are continually being reconstituted, there's no real need for either. Reconstituted zerglings are free of resource cost, and do not take up larvae that swarmlings would require. The swarmling's greater numbers are still an advantage (1 more 'ling per moprh), but it's doubtful the 20 or so extra 'lings you'd get over the course of the map would swing the battle much one way or the other. Compared to the bonus damage and leap attack of the Raptor, Reconstitution-heavy strategies have an easy choice.


But even beyond considering reconstitution, there's another idea worth exploring - banelings! Swarmlings let you produce banelings much faster (and at a reduced total mineral cost) than Raptors. If you're a player who's fond of the little, rolling acid-balls, picking swarmlings means more banelings, faster, for less minerals. And while 18 swarmlings on their own might not work as an "Oh @#$*, they're killing my base" button, 18 banelings very well might (and they'll be out more than twice as fast as a Raptor's 12 'ling hail mary). If you're making Zerglings for their explosive relatives, you may find the Swarmlings a better choice, overall.

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+1 for Banelings, I didn't even think of that when I made my choice. –  Biff MaGriff Mar 27 '13 at 16:52
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I will keep it short and somewhat personal.

Tl;dr - Raptor Strain + Metabolic Boost = Winning.

This combination gives you fastest, most mobile and cheapest land unit in early, mid and sometimes in endgame. This combination make winning so easy that it was crazy. Combined with mutalisk for air dominance makes very fast, aggresive and mobile army that I prefer in SC2: HotS.

And you feel something warm inside when you make such unstoppable Zerg swarm.

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That's my favourite combo as well :) –  JonathanJ Mar 14 '13 at 22:59
Fellow zerg brother ;) ! –  iber Mar 14 '13 at 23:00
This answer influenced my decision >:) –  MuToiD_MaN Mar 21 '13 at 20:11
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Consider that it is not just about cost or supply, but also about how much space a unit needs. Swarmlings take more space for the damage. Like normal Zerglings, they stand in the way and block other units, they might be stuck behind the shooters if your army is not organized.

In a typical "deathball" army with Raptor Lings, all units can spend more time attacking and less time standing in each other's way. The raptors can jump across bunkers or across your own units.

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