TL
← Research
Enemy composition
Selection and replacement layers confirmed in code Current authored data rechecked against the latest game data
Code verified · 7.1.0
Created
Sep 20, 2026
Last modified
Sep 28, 2026
Written for
Game 7.1.0
Code verified for
Game 7.1.0
Current game
Game 7.2.1 · released Oct 22, 2026

This article’s code/data verification predates the current game version. Its relevant code paths should be reviewed before it is marked current. Live-game testing is tracked separately.

Enemy Constellations & Composition

composition tags change more than Patrols. They can alter which group templates are admitted, which exact enemy variants resolve, and which normal enemies are replaced by specialists.

Spawn templates
356 authored
Exact variants
150 mapped
Replacement rules
63 mapped

Roster calculator

Set the faction, difficulty, squad size, pool, and any known composition tags. The tool keeps exact broad-profile odds separate from authored template shares and deterministic replacements so the numbers are not presented as if they mean the same thing.

Active composition tags
Baseline profile Choose up to one

These are the mutually exclusive broad-roll profiles shown in the reference below. Balanced profiles are usually the closest authored profile to the ordinary baseline.

Subfactions & special tags Choose any number

These can stack with the baseline profile and with each other, including special composition tags such as Dragonroaches and Hive Lord.

0 matching templates
Live result

Eligible authored templates

Changes immediately with faction, spawn pool, difficulty, squad size, and selected composition tags. Nominal share compares the visible authored base weights; runtime context can still change the final draw.

Broad roll reference

Composition-tag odds

These odds depend on faction and difficulty. Click a profile to select it in the calculator above.

Composition-tag effects

The footprint below counts every authored template, concrete variant record, and direct replacement rule that references each mapped composition tag. A zero in one column does not make the tag irrelevant; it means that layer is not how that tag changes composition.

0 results
composition tag How it enters Templates Variants Replacements
Hive Lord Special / overlay 0 0 0
Bug Balanced Broad profile 2 0 0
Bug Crawlers Broad profile 9 0 0
Armored Brood Broad profile 7 2 0
Predator Strain Special / overlay 8 1 2
Rupture Strain Special / overlay 3 3 6
Dragonroaches Special / overlay 3 1 1
Spore Burst Strain Special / overlay 10 4 7
Bug Fodder Broad profile 6 0 0
Predator Strain Broad profile 5 1 2
Acid Brood Broad profile 7 4 3
Panzer Division Broad profile 7 0 0
Cyborgs Special / overlay 13 5 4
Phalanx Division Broad profile 8 3 0
Bot Balanced Broad profile 0 0 0
Artillery Division Broad profile 10 2 3
Incineration Corps Special / overlay 8 4 17
Assault Division Broad profile 9 3 3
Jet Brigade Special / overlay 6 3 12
Mindless Masses Special / overlay 61 7 2
Invasion Fleet Broad profile 31 9 0
Appropriators Special / overlay 39 10 1
Vote Snatchers Special / overlay 32 5 0

Spawn pools

Faction Patrol Guard force Encounter Traveling Total
Automatons 44 50 8 4 106
Illuminate 79 51 20 1 151
Terminids 39 46 8 6 99

Counts are authored templates, not spawn probabilities. The calculator applies the visible faction, pool, difficulty, player-count, and composition tag gates before comparing base weights.

Specialist replacements

Filter by faction and composition tag to see exactly which player-facing enemy becomes which replacement. These are not percentage rolls: the applicable highest-priority rule wins, and a replacement can feed another eligible rule.

Faction
0 rules Highest matching priority wins. Generation-point multiplier changes population cost, not probability.
Composition tag Enemy Replacement Difficulty Priority Cost
Acid Brood Scavenger Bile Spitter D2+ 0 1×
Acid Brood Scavenger Bile Spitter D2+ 0 1×
Predator Strain Scavenger Pouncer D2+ 0 1×
Predator Strain Scavenger Pouncer D2+ 0 1×
Acid Brood Warrior Bile Warrior D3+ 0 1×
Spore Burst Strain Warrior Spore Burst Warrior D2+ 2 1×
Spore Burst Strain Warrior Spore Burst Warrior D2+ 2 1×
Spore Burst Strain Scavenger Spore Burst Scavenger D2+ 2 1×
Spore Burst Strain Scavenger Spore Burst Scavenger D2+ 2 1×
Spore Burst Strain Hunter Spore Burst Hunter D2+ 1 1×
Spore Burst Strain Hunter Spore Burst Hunter D2+ 1 1×
Predator Strain Hunter Predator Hunter D2+ 2 1×
Predator Strain Hunter Predator Hunter D2+ 2 1×
Rupture Strain Charger Rupture Charger D6+ 3 1×
Rupture Strain Charger Behemoth Rupture Charger D6+ 3 1×
Rupture Strain Bile Spewer Rupture Spewer D6+ 3 1×
Rupture Strain Warrior Rupture Warrior D6+ 3 1×
Rupture Strain Warrior Rupture Warrior D6+ 3 1×
Rupture Strain Nursing Spewer Rupture Spewer D6+ 3 1×
Dragonroaches Bile Titan Charger D2+ 0 1×
Spore Burst Strain Bile Titan Bile Titan D5+ 1 1×

Weights and probabilities

Broad composition tag odds are exact within the retained authored profile table. Current mission-prediction artifacts reproduce those probabilities for the combinations represented in the corpus. The retained Automaton table uses five equal options at 20% each, while the Terminid table shifts toward Acid Brood and Predator Strain on the highest difficulties.

Template base-weight shares are only a nominal comparison. Runtime population context can alter live weights after authored eligibility is established. The calculator therefore never labels that number as the final spawn chance.

Direct replacements are deterministic. Their displayed generation-point multiplier changes the resulting member's population cost; it is not a replacement probability.

Selection pipeline

  1. 01

    Roll the broad force profile

    The mission selects from faction-specific weighted composition tags. The retained profile table shifts Terminid weights on the highest difficulties while the Automaton entries stay even; current mission-prediction artifacts reproduce the represented combinations.

  2. 02

    Add any special composition tags

    Other mission systems can add tags after the broad roll, so several tags can affect one mission at the same time.

  3. 03

    Build the requested spawn pool

    Faction, difficulty, player count, composition tags, and other population context decide which authored group templates enter the live candidate tables.

  4. 04

    Apply live template weighting

    Authored base weight is adjusted by runtime context before selection. The calculator therefore labels its template percentage as a nominal share.

  5. 05

    Resolve exact enemy variants

    Each selected group can still resolve its members through difficulty- and composition tag-sensitive weighted variant choices.

  6. 06

    Run specialist replacements

    Matching replacement rules are priority ordered and deterministic. A replacement can feed another rule, for up to five passes.

Composition vs timing

The constellation system helps determine what an Encounter request can produce. It does not by itself determine when the request fires.

The Encounter timing research covers reinforcement, objective, ramp-up, and scripted-wave timing. The Patrol research covers Patrol cadence, routing, and spawn-location logic.

Calculator limits

composition tag fields are confirmed eligibility gates, but several hidden authored filters still lack a narrow player-facing interpretation. The calculator exposes the gates that are established and leaves the remaining runtime context out rather than inventing exact final probabilities.

An composition tag-specific template count is also not the complete usable pool. Untagged baseline templates can remain available beside tag-specific rows, and special mission systems can add additional composition tags after the broad force-profile choice.

Evidence status

Finding Evidence status
Patrols, guard forces, Encounters, and traveling groups are separate authored template pools. Confirmed
Broad composition tag profiles use normalized weighted selection; retained profile weights are corroborated by current mission-prediction artifacts for represented combinations. Confirmed
composition tags gate authored group templates and exact enemy variants. Confirmed
Direct specialist replacements are deterministic, priority ordered, and can chain for up to five passes. Confirmed
Authored template base weight is not necessarily the final live selection probability. Confirmed
The narrow player-facing meaning of every hidden authored filter field is not yet fully decoded. Unresolved

Current-build verification

Verification How this page was rechecked

The current game data and code were rechecked against the retained constellation model. The profile weights, template and variant relationships, and direct replacement rules used by this page remain consistent with the current build.

Current mission captures independently support the represented faction, difficulty, and composition-tag combinations. Combinations not present in those captures retain their previously verified profile values rather than being presented as newly observed.

Evidence standard

How the OTL separates code confirmation, controlled live testing, and behavior that remains unresolved.

How the OTL rates evidence

The OTL rates code evidence and live-game evidence separately. A mechanic can be clear in code but still need a controlled gameplay check for hidden state, ordering, or another runtime factor.

Confirmed Direct evidence establishes the claim in that channel.
Supported Evidence is consistent with the claim, but an important condition is not fully isolated.
Not tested No independent evidence from that channel has been documented yet.
Unresolved The available evidence is insufficient to make the claim safely.
Contradicted Direct evidence in that channel conflicts with the claim.

Live confirmation means controlled gameplay or instrumented runtime observation, not player impression alone.