Tell it what you own and what you're doing, and it builds the best squads your account can actually field. Nothing to press — it updates as you type.
One thing worth knowing: gear is entered as a list of what you own, not per hero. In Last War it moves freely between heroes, so the builder pools it and puts your best pieces on whoever it fields — which is why a Railgun you had on one hero turns up on another.
Squad Builder
Tell us your season, the heroes you own and how built they are, and what you're doing — and get the best squad from your roster, plus the meta-ideal comp and what to invest in.
A curated meta recommender (data: Season 6: Lost Rainforest, updated 2026-06-26), weighted by your investment — not a combat simulator. There are no public damage formulas, so treat it as expert guidance, not an exact calculation. Tier ratings reflect the current (Season 6) meta and are broadly season-stable for the UR roster. Per-season availability is gated; per-season historical ratings are not modelled.
Where these ratings come from
Squad setups researched from community guides + player ground-truth, and built on the confirmed Season 6 mechanics: pure mono-type gives the same-type bonus (S6 removed the 4+1 hybrid), the type triangle (Tank>Missile, Missile>Aircraft, Aircraft>Tank), and amplifiers (Marshall, Morrison, Sarah, Mason) that multiply the whole squad. Confidence reflects how well each recommendation follows these mechanics and sources — not merely whether a named comp is published.
Your season
You own what you own, so your whole roster stays available — the season only controls Awakening. Awakening (Season 6) is hidden for this season. Ratings reflect the current Season 6: Lost Rainforest meta.
Season 1: The Crimson Plague — Exclusive Weapons arrive, T10 troops, the Aircraft meta shift and star-promoted gear. HQ stays at 30 all season. Full guide →
Kimberly, DVA, Tesla
Their weapon cannot be levelled before this season, and skills stop at 30 until it is unlocked — so weapon shards spent on them earlier do nothing.
Mason
Gains the UR stat line, and his passive Zombie Cleaner boosts back-row Tank heroes' damage against monsters. That is monster-only — it does nothing in PvP — so promote him for PvE, bosses and Zombie Siege, and keep Stetmann in your Arena line.
A promotion raises the hero onto a UR stat line, but they keep 60 hero skill points where a hero born UR has 120. So it is a real upgrade, without quite matching an equivalent native UR — and it is worth spending on the hero whose promoted skill fits what you actually play.
3. What are you doing?
Open-field / world-map PvP, single-squad Arena and base fights. Your strongest mono-type squad wins most exchanges.
Drone skill chips — ★ per chip, per troop type (they buff matching-type squads)
Lethal Firestorm (the Attack chip) is your drone's damage driver, so the builder favours the type whose Lethal Firestorm ★ is highest and flags the weakest to level. For PvP it also counts Gravitational Resonance Armor + Memory Ultra Fission. Set each chip's rarity (UR or SSR) — you can mix them, and UR is far stronger per ★, so an SSR chip counts for much less.
Troop Centers — building level per troop type (each boosts its arm's hero HP / Attack / Defense)
Level cap follows the season (Seasons 1–2 cap at 30, Seasons 3+ at 35). Whichever Center you've pushed highest makes that troop type relatively stronger, so the builder tilts toward it — enter all three so it's balanced correctly. At level 20 each Center also unlocks its type's Wall of Honor.
4. Your recommended squad
Mark the heroes you own above to get a recommendation.
To improve
- Meta ideal for PvP / Arena (Open-field) is PvP (Open-field) — Aircraft mono — you're missing Carlie, Lucius, DVA, Morrison, Schuyler.
- You've marked fewer than 5 heroes owned — add the rest of your roster for a complete squad.
UR gear — what to build
1. Your heroes 0 owned
Tick everyone you own, then set stars, exclusive weapon and skill levels — stars and EW alone are enough for a good ranking, skills sharpen it. Gear isn't here: it goes in Your gear below, because the builder pools it and puts your best pieces on whoever it fields.
2. Your gear 0 pieces
Tick the heroes you own first — then your gear goes here, and the builder puts your best pieces on whoever it fields.
Your squads are already built from the heroes and gear above. These two only nudge which troop type comes out on top — worth setting once if you have invested more in one type than the others.
Tech Center research — enter your levels so the builder reflects your account
Enter the level of each combat research node. This nudges the recommended troop type toward what you've actually invested in, and personalises the “research next” picks on each squad. Your levels are saved to your account and sync across devices (same as your roster), and are shared with the Research Calculator. Economy/growth research doesn't change a squad, so enter that in the Research Calculator.
Back up or share your roster
Your heroes, gear, research and drone chips are saved to your access code and sync across devices. These give you your own copy.