Terra ArchiveArknights fansite♟Stronghold Protocol25 days left
›Operators›Enemies›Stages
›Recruitment›Material Farming›Upgrade›Stages
›Integrated Strategies◂
·Phantom & Crimson Solitaire·Mizuki & Caerula Arbor·Expeditioner's Jǫklumarkar·Sarkaz's Furnaceside Fables·Sui's Garden of Grotesqueries·Blackflow Forest of the SunkenFuture
›Reclamation Algorithm◂
·Tales Within the Sand·Reboot Anchor (CN)Future
›Stronghold Protocol◂
·Season 2·Season 1Ended
✦Event▾
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Unofficial Arknights fan project. All in-game names and data belong to Hypergryph / Yostar and their respective right holders.

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HomeOperator ArchiveEnemiesStage HandbookStage SimulatorBase Auto-PlannerPublic Recruitment HelperMaterial Farming HelperUpgrade SimStoryIntegrated Strategies GuideReclamation Algorithm GuideStronghold Protocol GuideAbout Terra Archive
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Deployed 2026-09-05 17:17 KST

ABOUT

About Terra Archive

An Arknights companion · 한국어 / English / 日本語

Terra Archive is a non-commercial fan toolkit for Arknights players (Doctors). From researching operators to planning your base, recruitment, material farming, upgrade budgeting, and catching up on the story — it parses the game data directly and an automated pipeline keeps everything up to date. No install, no login; it runs right in the browser, and the universal search in the header (⌘K) jumps to any operator, material, story, or tool from a single word.

Seven tools in one. Tap a card to jump to that feature.

⌂

Base Auto-Planner

Just enter the operators you own and it automatically builds the whole A/B two-shift assignment for the 243 base (factories, trading posts, power plants, control center, reception room, and more) for you.

It isn't a tool that does 100% for you. By accounting for synergy sets, cross-facility point systems, and shift policy, it locks in 90%+ of the overall framework automatically — and is designed so you, the Doctor, finish the remaining 10% to fit your preferences and edge cases. Per-room manual edits, fill-empty-slots, per-operator Elite adjustment, and production-priority modes are all supported.

  • Choose a production priority: Gold-first, Battle Record–first, or Balanced
  • Auto-detects faction synergies (e.g. the Kjerag trading-post set) and token systems (Worldly Plight, etc.)
  • Three roster-import paths — MAA file, game-screenshot recognition, or Yostar account login (syncs your actual roster in one go)
  • Base layout presets (243 · 153 · 252 · custom), power & facility-level management, and recommendations for which operator to raise next
  • Export/import assignments; can include future (CN-first) operators in the calculation
▤

Operator Encyclopedia

Every operator's stats, skills, talents, potentials, modules, and base skills in one place.

  • Filter by faction, class, subclass, combat tags, and synergy concepts; search by name, nickname, or effect
  • Per–Elite-phase stats and range, skill SP and duration, module stats and effects in full detail
  • Synergy (concept-deck) tags group operators that work well together
  • Community-submitted nicknames are tallied and made searchable — find operators by nickname too
⊗

Enemy Handbook

Stats, abilities and immunities for 1,500+ enemies — and a reverse lookup of the operations each one shows up in.

  • Filter by class (Normal/Elite/Boss), race, melee/ranged, ground/flying, and damage type
  • Compare stats across reinforcement tiers side by side — the same enemy scales with stage difficulty
  • Status immunities (stun, silence, freeze…) are listed so you know what actually lands on it
  • “Where have I seen this one?” — appearances grouped by zone, with spawn counts
▨

Stage Handbook

Terrain layouts for 2,200+ operations, with sanity cost, enemies and drops on one screen.

  • Filter Main Theme, Intermezzi, events, Annihilation, supply and SSS by category and zone
  • In-game terrain images where they exist; where they don't, the tile grid is rendered from level data
  • Tap an enemy to jump straight to the Enemy Handbook — reinforced variants are marked with ★
  • In-game drop frequencies included. Measured rates and sanity efficiency live in the Material Farming Helper
▶

Stage Simulator

Pick an operation and replay its enemy spawn timeline — when each enemy appears, which route it takes, and where it goes.

  • Jump in from search or the picks (latest event, Main Theme, Annihilation) and it starts playing right away
  • Enemy-portrait tokens run along their actual routes, with playback speed and seeking
  • A baseline timeline with no blocking — conditional reinforcements (kill-count branches, etc.) are excluded
  • The same simulation is available from the Enemy routes tab on stage pages and Integrated Strategies combat nodes
◎

Public Recruitment Helper

Calculates which guaranteed or high-rarity operators a recruitment tag combination can yield.

  • For each selected tag combo, shows the possible operators and the minimum guaranteed rarity
  • Ranks guaranteed high-rarity combos first so you don't miss them
◈

Material Farming Helper

Shows which stage is most efficient for each Elite material, from measured drop statistics.

  • Expected sanity-per-item (sanity ÷ drop rate) per material, with a best-efficiency badge on the top stage
  • Based on Penguin Statistics real drop rates + extracted game data; only currently released stages
  • Rarity filter, name/nickname search, permanent-only toggle; click a material for its recipe and uses
▦

Operator Upgrade Sim

Totals the LMD, EXP, and materials an upgrade will cost, up to your target step.

  • Level and Elite chain in game order (E0 max → Elite 1 → E1 max → …), and you type the exact target level
  • Skill levels 2–7, masteries 1–3 per skill, and module stages 1–3 accumulate to a target per group
  • Queue several operators, save the totals as a share link — see exactly what and how much to farm
✦

Story

Terra Chronicle — events, main story, and Integrated Strategies on a Terra-calendar timeline

Read event and main stories two ways: the full script, or an AI digest.

  • Full-script reader — every in-game line with cutscenes and speaker portraits, binge the story outside the game
  • Dotted-underlined characters and terms in the text open a popover right where you're reading
  • AI digests for busy Doctors — written from the full script, the plot in about 10 minutes
  • A Terra chronology timeline plus by-theme grouping — theme links are shareable URLs
❖

Integrated Strategies Guide

Every IS theme's floor layouts, battle nodes, enemy dex, relics, and ending conditions — all difficulty-aware, fully localized in Korean, English, and Japanese.

  • All five released themes, from Phantom & Crimson Solitaire to Sui's Garden of Grotesqueries — plus the CN-first theme via the future-data toggle
  • Node maps per floor with in-game previews, enemy rosters, spawn counts, emergency multipliers, and wiki-verified encounter floors
  • The enemy dex recalculates stats live as you change the difficulty grade
  • Relics, encounters, and ending unlock conditions are cross-linked and clickable — with plain explanations of what each node actually does
  • An inventory for collectibles & theme resources, plus game-screen recognition — Screenshot Radar reads screenshots, and PRTS Link (BETA) attaches to your game window live, auto-navigating as you play and recording the run as a replay
❂

Reclamation Algorithm Guide

The permanent RA season “Tales Within the Sand” and the CN-first new season “Reboot Anchor”, straight from game data.

  • Food & drink — recipes with their α/β/γ variant effects, every ingredient cross-linked to where it drops and what it cooks into
  • All 106 areas — in-game blueprints, movement-route simulation, enemy stats, and resource objects plotted on the tile map
  • Crafting, structures, encounters, rifts, expeditions and the tech tree as cards with full detail modals, plus an RA-only enemy dex
  • The CN-first season keeps Chinese as the source text with an unofficial translation alongside — including 171 battle-terrain blueprints and the grid node map
♟

Stronghold Protocol Guide

Alliances, operators, enemies and the Supply Center of Stronghold Protocol Season 2 “Alliance”, straight from game data.

  • 23 alliances — 8 nation and 15 trait alliances with every activation threshold and its full effect text, plus the operators in each, grouped by tier
  • 112 operators — the garrison ability unique to each one, compared side by side at base and Golden, with the full text of every skill and module they own
  • Free-pick slots — the 68 6★ outside the shop roster, plus the 17 stand-in units that deploy when you don't own the operator
  • Enemies — 10 leaders (3 hidden) and 119 Tactical Training enemies across 7 types as portrait cards; tap one for the same stats and abilities as the enemy index
  • Supply Center — buy/sell price and promotion, level, skill and module values per tier, level-up cost and display slots per mode, and the 6★ roster you can drop into a free-pick slot
  • 59 items, 40 strategies, 43 tactics effects and 60 milestone reward steps

Future (unreleased) data

Turn on 'Include future data' in the header to preview operators, materials, and events not yet released (CN-first). Unreleased text is provided as an unofficial AI translation until launch — clearly labeled as such — and is automatically replaced with official data once the release lands in the source.

Data & updates

Data is based on community game-data extracts (ArknightsGamedata) and real drop rates from Penguin Statistics. When a new version ships, an automated pipeline detects it and regenerates the operator, base, recruitment, farming, and upgrade data together — so the site catches up quickly after each update.

Unofficial fan site

Terra Archive is an unofficial, non-commercial fan site unaffiliated with Hypergryph or Yostar. All in-game images, names, and story text remain the property of their respective owners, and we respect the fan-content guidelines. It is not operated for profit.

Report errors or suggest features via the feedback button on each page.

For anything else — copyright or takedown requests included — write to [email protected].