The Ballista in Valheim: Forty Missiles, and It Does Not Care Who You Are

 

    The Ballista is Valheim's only automated turret: a Mistlands-tier structure that holds forty missiles and fires them at anything that gets in its way. That phrase is doing real work — without a trophy loaded to program its targeting, the thing it shoots may well be your own tamed wolf, or you. And getting one built somewhere useful is harder than the recipe suggests, because one of its three ingredients cannot go through a portal.

 

    On sourcing. Iron Gate do not publish system documentation. The figures below come from the community wikis and can change with any patch.

 

What It Costs

 

 

Black metal	×10
Yggdrasil wood	×10
Mechanical spring	×3
Durability	250
Built with	The Hammer
Capacity	40 missiles of the same type

 

    All three materials are late-game. Black metal is Plains-tier, Yggdrasil wood needs a Black metal axe, and Mechanical springs come from the Mistlands — so a Ballista is not an early base defence no matter how much you want one.

 

    Its durability of 250 is modest, roughly a quarter of a Longship's hull. A turret is not a wall; it is a thing behind a wall.

 

    The description is unusually honest: "Defensive structure that shoots missiles at anything that gets in its way." Anything. That includes tamed animals wandering in front of it and players standing in the arc.

 

The Mechanical Spring Problem

 

 

    Mechanical springs are on the no-teleport list, as are Black metal and Black metal scrap. As our portal guide sets out, that list is short and absolute: every ore and metal, plus Dragon eggs, the Dvergr extractor, Mechanical springs, Charred cogwheels and Hildir's chests.

 

    So two of the three ingredients travel by boat or on foot. Three Mechanical springs and ten Black metal have to be physically hauled to wherever the Ballista is going — which turns a forward turret into a genuine expedition rather than a build-menu decision.

 

    Plan the trip around the springs, not the metal. Black metal you probably have; springs are the scarce item, and carrying three of them is the constraint on how many Ballistae you can place per journey.

 

    Yggdrasil wood teleports fine, so at least one third of the bill can be portalled ahead.

 

    Or build the Portal stone first. Once that is placed, the metal rule stops applying entirely — and a defensive line becomes a supply question rather than a logistics one.

 

Forty Missiles of One Type

 

 

    A Ballista holds forty missiles of the same type. Not forty missiles — forty of one type. You cannot load two ammunition types into a single turret, which means a defensive position that needs to answer two different threats needs two turrets.

 

    Forty rounds sounds like a lot until a raid arrives. A sustained event will empty a turret, and reloading is a manual trip to each one — there is no hopper, no feed, no automation beyond the firing itself.

 

    So a defensive line is several Ballistae, planned as a group. Spread them so their arcs overlap, load them for the threats that actually visit your biome, and accept that after a big event you are walking a reload circuit.

 

    Trophies program the targeting. As covered in our trophies guide, one trophy per turret tells a Ballista what to shoot — which is the mechanism that stops it killing your tamed boar, your wolves and you.

 

    That is the step to do first, not last. An unprogrammed Ballista shooting "anything that gets in its way" inside a farm with livestock is an expensive way to lose a breeding pair.

 

    And note what that means for trophy management. A trophy fed to the Obliterator becomes one coal; the same trophy programs a turret permanently. Keep one of everything.

 

Practical tips

• Black metal ×10, Yggdrasil wood ×10, Mechanical spring ×3 — durability 250.
• Mechanical springs and Black metal cannot be teleported. Plan a boat trip.
• Yggdrasil wood can be portalled ahead.
• A Ballista holds 40 missiles of a single type — no mixing.
• Reloading is manual, per turret. A raid will empty one.
• Program the targeting with a trophy first, or it shoots your livestock.
• A line of turrets with overlapping arcs beats one turret anywhere.
• The Portal stone removes the hauling problem entirely once built.

 

Running your own Valheim server

 

    A turret line is base infrastructure built once and reloaded for months — and it only matters on a world that raids can actually reach while you are away. A gamever Valheim server keeps that world live for up to 10 players, with one-click backups so a bad event never costs the whole position.

 

Conclusion

 

    The Valheim Ballista costs Black metal ×10, Yggdrasil wood ×10 and Mechanical spring ×3, carries 250 durability, and holds forty missiles of a single type — you cannot mix ammunition in one turret, and reloading is a manual trip to each. Two of its three ingredients — Black metal and Mechanical springs — are on Valheim's no-teleport list, which turns a forward turret into a boat expedition and makes the three springs the real constraint on how many you can place per journey. Its own description warns that it "shoots missiles at anything that gets in its way", so program the targeting with a trophy before you load it, or the first thing it kills will be your own livestock. Build several with overlapping arcs rather than one, and if you have reached the Portal stone, the hauling problem disappears entirely.

 

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