RimWorld Tame Megaspider Guide: How to Domesticate the Ultimate Insectoid Tank
The Megaspider is widely regarded as one of the most formidable biological weapons in the RimWorld universe. Unlike the gentle Muffalo or the noble Thrumbo, the Megaspider is a product of genetic engineering, a creature born from the "Insectoid" faction designed for tunnel defense and ship-to-ship boarding actions. In the hands of a skilled player, a tamed Megaspider becomes an unstoppable frontline tank, capable of shredding raiders and soaking up an incredible amount of damage. However, the process of bringing such a beast under control is fraught with danger, requiring precise timing, high-level animal handling skills, and a bit of medical ingenuity.
While most players view infestations as a death sentence or a chore to be cleaned up for jelly and meat, the veteran player sees an opportunity to bolster their colony’s defenses. A domesticated Megaspider offers a unique combination of high natural armor, high damage output, and surprisingly low maintenance compared to the elusive Thrumbo. Because they are technically "wild" once separated from their hive, the taming process deviates from standard animal husbandry. You cannot simply wait for a Megaspider to wander onto your map; you must actively engage with a hostile hive and "rescue" your future pet from the brink of death.
To successfully tame a Megaspider, you must understand its behavior. They are aggressive, hive-minded, and fiercely protective of their queens and jelly. Mastering the domestication process involves more than just clicking a "Tame" button; it requires a deep understanding of combat mechanics, temperature manipulation, and the RimWorld "wildness" scale. This guide provides a comprehensive breakdown of how to turn these chitinous nightmares into your colony's most loyal guardians. The Biology and Combat Utility of the Megaspider
The Megaspider is the largest and strongest of the insectoid species, towering over the Spelopede and the Megascarab. From a technical standpoint, it possesses a high base health pool across all its limbs and a thick chitinous shell that provides natural sharp and blunt armor. In combat, its claws are capable of severing limbs in a single hit, and its high movement speed ensures that few enemies can outrun it once it has closed the gap. When tamed, these attributes make it the ideal "meat shield" for your fragile human colonists, especially in close-quarters combat or killbox chokepoints.
Beyond raw power, the Megaspider is surprisingly versatile. While it cannot be milked or sheared like other livestock, it can be trained for "Advanced" intelligence tasks. This includes guarding, attacking, and even hauling. Because of their high carrying capacity and resilience to environmental hazards, a pack of Megaspiders can serve as an effective, albeit intimidating, logistics crew. They are also remarkably efficient eaters, capable of surviving on kibble, raw meat, or even the corpses of the raiders they just helped you defeat.
The primary challenge in maintaining a Megaspider is its high "Wildness" rating, which typically sits at 80%. In RimWorld, wildness dictates two things: the difficulty of the initial taming and the frequency of "maintenance training" required to keep the animal from reverting to a wild state. A Megaspider requires a pawn with an Animal skill of at least 10 (though 15+ is recommended) to minimize the risk of a taming fail resulting in a manhunter revenge event. If you fail to maintain their training, they will eventually lose their "Tame" status and return to being a hostile insectoid, potentially inside your base. Step-by-Step Guide: The "Down and Rescue" Taming Method
Taming a Megaspider in vanilla RimWorld is a multi-stage process because you cannot tame an insectoid while it is part of an active, hostile hive. You must first break its connection to the hive faction. The most common and effective method is to "down" the Megaspider in combat and then rescue it. Once the creature is incapacitated and its hive is destroyed, it becomes a "wild" creature rather than a "hostile faction member." This shift is crucial for the taming option to even appear.
First, you must trigger or locate an infestation. Once the insects have emerged, you need to isolate a single Megaspider. This is best done by using "choke point" tactics or psychic lances. Using a Psychic Shock Lance is the safest method; it immediately downs the creature without causing major physical trauma. If you choose to use traditional combat, equip your pawns with blunt weapons like maces or clubs. Blunt damage is less likely to cause lethal bleeding or limb loss, increasing the chances of the spider surviving in a downed state. Once the spider is down, you must quickly destroy the nearby hives to prevent reinforcements and to "neutralize" the faction status of the downed insect.
After the combat is over, create a small, enclosed room nearby and place an animal sleeping spot. Set the spot to "Medical" and have your best doctor tend to the Megaspider’s wounds. Do not use high-quality medicine unless the creature is near death; simple herbal medicine or even no medicine (if the doctor is high-skill) usually suffices. Once the Megaspider recovers and stands up, it will wander around the room. At this point, it is considered a "wild animal." You can now assign your best Animal Handler to begin the taming process. Ensure your handler is carrying high-quality food like kibble or meat to increase the success chance. Comparative Analysis: Megaspider vs. Other Apex Predators
When deciding whether to invest the time and risk into a Megaspider, it is helpful to compare it to other top-tier combat animals in the game. The Megaspider occupies a middle ground between the common Grizzly Bear and the legendary Thrumbo. While it lacks the sheer health of a Thrumbo, it is much easier to acquire in large numbers because infestations provide a steady supply of candidates.
Attribute
Megaspider
Thrumbo
Grizzly Bear
Warg
Wildness
80%
98%
80%
80%
Armor (Sharp)
18%
30%
0%
0%
Base Damage
12-15
24-30
10-12
10-14
Speed (c/s)
3.60
5.50
4.00
5.20
Training
Advanced
Advanced
Advanced
Advanced
Diet
Omnivore
Dendro-vore
Omnivore
Carnivore
As shown in the table, the Megaspider’s natural armor is a significant advantage over bears and wargs. Even though 18% armor sounds low, it frequently deflects low-quality arrows and reduces the damage from small-caliber firearms. Furthermore, because they are omnivores, Megaspiders are much easier to feed than Wargs, which refuse to eat anything but raw meat or corpses. The Thrumbo remains the king of the Rim, but the difficulty of taming one (98% wildness) makes the Megaspider a much more realistic goal for a mid-game colony. Maintenance, Training, and Colony Safety
Once you have successfully tamed your Megaspider, the work has only just begun. Due to their high wildness, they require constant attention. A dedicated Animal Handler must regularly "refresh" their training in Tameness, Obedience, and Hauling. If a Megaspider's tameness decays to zero, it will revert to a wild state. If this happens while the spider is inside your barracks or dining room, it will immediately become hostile, leading to a potentially lethal "surprise infestation" scenario within your own walls.
To mitigate these risks, it is best to zone your Megaspiders appropriately. Keep them in the perimeter of your base or in designated "kennels" near your killbox. Do not allow them in the hospital or kitchen, as their presence can create filth and increase the risk of infection or food poisoning. Furthermore, consider the "Bonding" mechanic. If a Megaspider bonds with a pawn, that pawn receives a permanent +5 mood buff. However, if the spider dies in combat, the pawn will suffer a significant "Bonded animal died" mood penalty. Given that Megaspiders are frontline tanks, their death is a statistical probability, so be careful who you assign as their primary trainer.
Another advanced tactic is the use of Cryosleep Caskets. If you have an "Inspired Taming" event on a pawn but no current Megaspiders are available, you can down a Megaspider and put it in a cryosleep casket (often found in Ancient Shrines) until your pawn is ready. Conversely, if you have too many Megaspiders and cannot keep up with the training demand, you can freeze them until they are needed for a major raid defense. This effectively pauses their wildness decay and their hunger. Pros and Cons of Megaspider Domestication
Pros:
Superior Tanking: They have a high resistance to pain and can continue fighting even after losing several legs or antennae.
Abundant Supply: Infestations happen regularly in mountain bases, providing a consistent source of new "recruits."
Psychological Warfare: They are excellent for distracting raiders, allowing your snipers to pick off enemies while the raiders are busy dealing with a giant insect.
Low Food Cost: They can eat almost anything, including the bodies of fallen enemies, making them very sustainable.
Cons:
High Danger: The initial taming process requires getting dangerously close to a hostile creature.
Training Decay: You need a high-level Animal Handler dedicated to them, or they will turn wild.
Social Impact: They are ugly and increase the "Filth" rate of your floors significantly.
Friendly Fire: Because they are melee-focused, they are frequently hit by your own pawns' gunfire if you are not careful with your firing lines.
Frequently Asked Questions (FAQ)
Can Megaspiders be bred in captivity?
In the vanilla version of RimWorld, Megaspiders do not reproduce sexually. They are "spawned" by hives rather than born. Therefore, you cannot start a Megaspider farm through breeding; you must tame each one individually from infestations. Some mods, like "Alpha Animals" or "Genetic Rim," may change this mechanic, but in the base game, taming is the only way to acquire them.
What is the best food to use for taming?
The best food for taming is Kibble or Raw Meat. While they will eat vegetables, animal products and meat-based foods have a slightly higher success modifier in some versions of the game's logic, and more importantly, they are usually what you have in abundance during an infestation. If you can afford it, Fine Meals actually provide a higher taming chance, but this is generally considered a waste of resources.
What happens if the Megaspider's hive is still alive?
If the hive is still active, the Megaspider will remain part of the "Insectoid" faction. You cannot tame a creature that belongs to an active hostile faction. You must destroy all hives in the area to "free" the Megaspider from its hive-mind, turning it into a neutral wild animal that is eligible for taming.
Can I use Megaspiders for caravans?
Yes, Megaspiders have a decent carrying capacity and can be taken on caravans. They provide excellent protection during "Caravan Ambush" events. However, remember that they still need to be trained regularly. If their tameness decays while you are on the world map, they might leave the caravan or turn hostile, which can be disastrous in the middle of a journey.
Is the Megaspider better than a Warg?
Generally, yes. While Wargs are slightly faster, the Megaspider’s natural armor and omnivorous diet make it much more versatile for a growing colony. Wargs are notoriously difficult to feed during winters or toxic fallouts because they refuse to eat vegetables or kibble, whereas a Megaspider will happily munch on hay or simple meals....
