What is the Behemoth in State of Survival?

A late-game war machine housed at the Behemoth Institute. There are five: MK I, MK II and MK V are combat machines, MK III and MK IV are companions that buff your marches.

What is a Behemoth Core?

It isn't an item. Players use "core" for the Behemoth enhancement system, and the currency that actually feeds it is called a Behemoth Cell. If you're searching your inventory for cores, look for cells.

How does Behemoth enhancement work?

Behemoth Cells push you up a tier ladder: Cataclysm II, Cataclysm III, then Abaddon I, II and III, then Ultra-Enhance. Your ceiling is capped by Behemoth Institute level.

How do I upgrade Behemoth skills?

With biobatteries. Each of the five main skills goes to level 20, then opens further branches. MK V uses biobatteries for skills too, plus Stabilizers for its Ultra Skills.

What's the difference between Behemoth MK I and MK II?

Both are combat Behemoths on the same three tracks, but the skill sets differ. MK I runs Artillery Barrage, Destructive Missile, Electromagnetic Protection, Dominating Aura and Destructive Ray. MK II is built around sustain and interference: Blood Conversion, Energy Transfer, Induction Barrier, Life Devour, EM Interference and more.

What are Behemoth MK III and MK IV?

Companion Behemoths. They buff your marches rather than fighting as units, level with Power Serum, take skills through Neuronal Medium, and enhance with Aero Cells (MK III) or Cryo Cells (MK IV), all from Companion Intel missions.

Where do I get Behemoth Cells and biobatteries?

Mainly Annihilation Awaits, the flagship Behemoth event, which runs every other week. Event stores and SotF or Bloodsport task ladders top them up.

Should I prioritise the Behemoth?

Only once HQ, troops, and research are healthy. Before that, resources return more elsewhere.

Which Behemoth skills should I max first?

The ones matching how you actually play. Rally skills for rally leaders, defensive skills if you garrison. Concentrate rather than spreading.

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State of Survival Behemoth Guide: Cores, Cells and MK I to MK V

Last Updated: August 1, 2026

Published: August 1, 202611 min read