World Archive & MERIDIAN

Mechanics Guide - Remnants: Post-Collapse Idle Survival

Contents
"I have built this city before. I am almost sure of it. The order of the work comes to me the way a half-forgotten song does - from underneath."

Overview

The World Archive is the narrative spine of REMNANTS - a 15-transmission MERIDIAN story arc that reveals what caused the Cascade, who the Commander really is, and the truth of the AI named MERIDIAN. You read it inside the Echo Forge → World Archive tab.

Lore used to be locked behind prestige alone - one transmission per Echo Reset. It now reconstructs in two ways at once: a prestige floor that guarantees steady progress, and Memory Shards recovered during active play that let you decrypt transmissions mid-run, ahead of schedule. The archive is also where the world visibly drifts toward MERIDIAN as the truth surfaces.

Memory Shards

Memory Shards are a soft currency dropped by ordinary play. You don't spend them manually - they flow automatically into the next sealed transmission and decrypt it once its quota is met.

Where to watch: the World Archive tab in the Echo Forge shows a NEW badge whenever a fresh transmission is waiting, and the active transmission shows its shard progress (e.g. 4/7 reconstructed).

Reconstruction & the Prestige Floor

A transmission counts as decrypted if either condition is met:

Shards can only run one transmission ahead of the prestige floor. You can read at most one transmission early - you can't shard-rush the whole story in a single run. The floor then catches up on your next reset, and the shard pressure moves to the next sealed entry.

Why it feels good: active players are rewarded with the story sooner, but idle/prestige players never stall - the floor guarantees one transmission of progress per Echo Reset regardless of shard luck.

Shard Costs Per Transmission

Cost ramps gently so early transmissions fill in roughly one active run, while later ones take more sustained play. The formula is:

Shard cost
5 + run × 2
Shards to decrypt transmission at run index run
First transmission
5 shards
Run 0 - "Transmission One"
Final transmission
33 shards
Run 14 - "Transmission Fifteen"
TransmissionRun indexShard cost
Transmission One05
Transmission Three29
Transmission Six515
Transmission Ten923
Transmission Fifteen1433

The 15 Transmissions

The hand-authored canon is 15 transmissions, each a different document type - emergency broadcasts, recovered journals, classified files, audio confessions, system logs. Together they move from the night of the Cascade to a final direct address. The arc breaks roughly into three movements:

Spoiler-light by design. The story rewards reading in order. We won't summarise the ending here - decrypt it yourself.

World-Tier Drift

As you decrypt more of the archive, the interface itself drifts. The world tier is keyed to how many transmissions you've reconstructed:

TierTriggerFeel
RuinEarly gameThe unexplained wasteland. Default palette.
DeliberateA few transmissions inThe first MERIDIAN reds bleed in - the Cascade starts to look intentional.
The Echo5 transmissions decryptedCyan drift. You begin to grasp the loop you're inside.
The AI Beneath8 transmissions decryptedCircuit-board glitch tones. The thing under it all is fully present.

The drift is applied as CSS layers over the whole UI - it's cosmetic, but it's the game telling you how deep into the truth you are without a single tutorial pop-up.

MERIDIAN Intrusions

Once you've reconstructed enough to suspect what's beneath the Cascade, MERIDIAN begins speaking through the interface directly. These are diegetic intrusions - the game breaking the fourth wall in-character:

It knows your run. The intrusions are tuned to your actual progress - they escalate the further you push the archive and the more Echo Resets you've completed.

The Reconstruction Finale

Decrypting the fifteenth and final transmission - the payoff for fourteen Echo Resets - triggers a full-screen reconstruction ceremony. MERIDIAN's last direct address types out in full, then hands you back to the World Archive to read the complete transmission. It's the closing beat of the entire narrative arc.

You don't have to rush it. The finale fires the moment the last transmission reconstructs, whether that's from the prestige floor on your fifteenth run or a shard-assisted early decrypt. Either way, it waits for you.

Echo Memories (Endless)

The "truth meter" (reconstruction %) is measured only against the 15 hand-written canon transmissions. But the archive never runs dry: past the canon, it generates infinite procedural Echo Memories - short, deterministic self-records seeded by your run index, so they stay stable across reloads without bloating your save.

Echo Memories are bonus flavour, not part of the reconstruction percentage. They're a quiet reward for players who keep prestiging long after the story "ends."

Strategy

Also see: Echo Reset & Forge Guide →  ·  Wiki Hub →  ·  FAQ →

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