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The real Simulacrum Prime.

Every hit counts.

Builder, simulator, optimizer.

Every formula cites its source, and every golden test is calibrated against a real in-game run. How to check it

Void Fissures

Read from DE's world state each minute. China's own servers are not covered.

Stug

Measured buildsthe board's best riven-free build for each ruler, and what this weapon's number does not account for
Best riven-free build on the WFSim board, as of 2026-10-18
RulerFightModeScoreBuildMeasured
Standard Single TargetThrax Centurion Lv 9999 SP · 180 s · KPMcycle9.9684Frostbite, Pistol Pestilence, Primed Heated Charge, Galvanized Diffusion, Hornet Strike, Primed Target Cracker, Galvanized Crosshairs, Anemic Agility, Secondary Deadhead2026-10-16 01:22 UTC
Standard Multi Target5x5 at 3 m · Thrax Centurion Lv 9999 SP · 180 s · KPMcycle9.9371Frostbite, Pistol Pestilence, Primed Heated Charge, Galvanized Diffusion, Hornet Strike, Primed Target Cracker, Galvanized Crosshairs, Anemic Agility, Secondary Deadhead2026-10-16 01:22 UTC
Demolisherone target · Demolisher Devourer Lv 9999 SP · 4-player health · 180 s · KPMcycle2.9649Frostbite, Pistol Pestilence, Primed Heated Charge, Galvanized Diffusion, Primed Target Cracker, Primed Pistol Gambit, Lethal Torrent, Anemic Agility, Lethal Momentum, Cascadia Flare2026-10-15 22:51 UTC
Heavy Gunnerone target · Eximus Corrupted Heavy Gunner Lv 9999 SP · 180 s · KPMcycle7.4134Frostbite, Pistol Pestilence, Primed Heated Charge, Galvanized Diffusion, Primed Target Cracker, Primed Pistol Gambit, Lethal Torrent, Anemic Agility, Lethal Momentum, Cascadia Flare2026-10-15 22:51 UTC
Not modelled here
  • The Incarnon form's bouncing secondary projectiles are not modelled: a stacked shot releases 2 to 5, each exploding on up to 3 bounces.
  • The charged alt-fire is not modelled: a full 10-stack blob over 2 s, for 10 ammo.
  • Unmeasured: how many stacks a shot lays. Read as floor(multishot), the count the Grimoire's multishot buys; rolling the fraction would lay more.
  • Unmeasured: a shot already over the cap (multishot over 10) is read as holding the pile at 10 and waiting 1.5 s, refreshed by each later shot, so steady fire never sets it off.
  • Unmeasured: a shot that crosses the cap is read as setting the pile off at once for 10 stacks, the rest lost.
  • Unmeasured: the explosion's falloff is read as 70%, from the page's bug note, rather than the 30% in its table.
  • Unmeasured: when a body dies, its pile is read as staying where it stood and going off on whoever is there.

Benchmark

Forma plan your rules, and the builds that share these polarities

1

Mode

2

Mods

0 / 0 0 Forma
Stance
A stance decides what the weapon actually swings: it publishes a combo per mode, and installing one replaces the weapon's own. It also GRANTS capacity instead of costing it — 10 on a slot of its own polarity, 5 on a bare one, 4 on the wrong colour.
Exilus
A polarity can be swapped between this slot and a main one — the slot stays Exilus. So its polarity counts toward any build, even one that leaves it empty.
3

Arcane

4

Evolution

Incarnon Genesis
0

Wielder

Σ

Stats

≡

Build

▶

Sim

1 · The fight who you are shooting at, where, and for how long

2 · External bonuses what the wielder is doing, and what others hand them — a ticked number replaces the wielder's own

3 · Limits what this run is allowed to assume

4 · Buffs the stacks the run STARTS with — the fight still grants and decays them on their own triggers

5 · Extra stats anything this weapon is handed from outside its build — it lands in the same bucket a mod would

6 · Warframe buffs abilities cast on this weapon — set your Ability Strength and the values follow

7 · Measure what to read off the run — the scenario's own term, so an official ruler pins it

The whole fight — every field, including the ones this weapon hides
φ

Shapley analysis

what each part multiplies the result by
4

Rivens

All rivens every riven you have made for this weapon, with what it actually rolls

Riven Analyst

every riven the board has measured, against its best riven-free build
5

Enemies

All targets every enemy you have made — pick one in the simulator's target list like any other

⚙

The search

the starts and the limits — what a search preset saves, with the runs per candidate

① Starts

② Limits none by default — click an option to exclude it; a start that pins an excluded option cannot run, one that only holds it has it replaced

▶

The fight

the simulator's — every candidate is scored under it, and it is edited over there
★

Optimize

each start improved by the quick calc until nothing helps

—

Forma plan your rules, and the builds that share these polarities

1

Mods

0 / 0 0 Forma
Aura
An aura hands capacity back instead of costing it: twice its drain on its own polarity, 80% of it rounded down on another. A polarity moves between all ten slots, the aura's included.
Exilus
2

Arcanes

3

Archon Shards

4

Operator

Σ

Stats

5

Abilities

—

1

Mods

0 / 0 0 Forma
Nothing a companion seats moves a weapon's numbers yet: no robotic weapon reads its wielder's stats, and no precept is run. What this answers is capacity and Forma.

Operator

Only the active school's nodes apply. A node that needs an Operator action counts only when you say it is running.
1

Focus school

3

What reaches the Warframe

—

This category is not built yet: nothing here is simulated.