Project-M/Docs/Vault/01_Vision/Identity_Lantern.md

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vision identity lantern	final-draft	2026-07-13	gamevault/01-vision/identity-lantern

LANTERN — Identity & Core Design (final draft, review-hardened)

v3 (2026-07-13). Final design draft. v2 was put through three independent adversarial reviews (theme/narrative · systems/game-loop · player-experience/market); all findings were accepted by the operator and are folded in here. Verdicts: "revise specific parts, don't rethink" / "needs targeted revision — unusually high confidence in the foundation" / "promising with fixes." Requirements held: 2–4 co-op · Shape-of-Dreams-grade skillshot combat with modular ability kits · a persistent base · narratively rich · solo dev + AI tooling, stylized low-poly (RoR2-lineage), Blender upskilling. Implementation: Roadmap_Lantern_Slice. (Working title "LANTERN" has poor Steam-search uniqueness — a naming pass is deferred to marketing.)

The pitch (lead with the invention)

A co-op action-RPG where your territory is light: what you light stays forever; what stays dark rerolls. Push a frontier of lamplight shelf by shelf down a mythic night-sea — a crew of kindled diving suits fighting skillshot battles against every sea-fear humanity ever named, to win back the drowned sun.

The tide-line (the persistence model) is the thing no shipped game does — it leads. The drowned-sun mythology is the setting that makes it sing.

Prior art & differentiation (owed honestly)

• Sunless Sea owns "dark mythic sea, light as economy" as atmosphere and text — LANTERN is a real-time skillshot action game where light is territory, not a fuel gauge.
• Below owns "lantern in shifting dark depths" — and died partly on solo dread and screenshot-illegible darkness; LANTERN is co-op-warm, and its readability law (below) is designed against exactly that failure.
• Barotrauma owns "co-op dread at the bottom of a dark sea" — side-scrolling submarine crew-sim; LANTERN is a top-down ARPG with a persistent claimed world. It will be the first comment under every trailer; the answer is the tide-line.
• Hades / Shape of Dreams / V Rising — the combat grammar, the modular-kit joy, and the territory pleasure respectively; LANTERN's contribution is making all three obey one rule.

The one rule — and the two lights

What the light holds, stays. What the dark holds, changes.

Applied to the world → the persistence model. Applied to your body → the death rules. Applied to your kit → the build system. Applied to the story → the stakes.

To keep the rule true, the fiction distinguishes two radiances:

• Light — the sun's true fire: warm, steady, gold/amber. Light holds: it preserves, banks, fixes.
• Gloam — the deep's counterfeit radiance: cold corpse-green/blue, lure-red, flickering. Gloam changes: it warps, baits, lies. Every false lantern, every predator's lure, every wild warp your grafts drink in the deep — that is gloam, not light.

The palette rule is the ontology: trust the warm and steady; fear the cold flicker.

And because "light" must never mean nine things at once on screen, the sub-currencies have names and distinct HUD glyphs:

Name	What it is	Glyph idea
Flame	your life — the loaned fire in your chest-glass	flame in glass
Lumen	spendable light — abilities, fuel, the banked economy	droplet of gold
Gloam	the wild radiance your grafts drink — the mutation feed	cold spark
Loudness	how much attention your light is drawing	ripple rings
Salvage / Chum / Tallow	materials: build-stuff · garden feedstock · rendered fixative	—

The mythic frame

Every mythology agreed on one thing: at night, the sun crosses a sea. Ra's barque sails the Duat; the Norse sun is chased into the waves; a hundred shores tell of the light that goes under the water and returns at dawn. And every shore named what lives in that water. They were all describing the same sea from different beaches — and one canon line covers the strays: every dark water drains here at night (marsh-wisps, river-drowners, and lake-things all wash down).

One night the crossing failed. The Serpent — Apep, Jörmungandr, Leviathan; every name is true — closed its coils around the barque, and dawn never came. The world above is a frozen, dying dark. The night-sea is now the only place the sun's light still exists: swallowed, scattered, hoarded.

The Last Lantern & the Wicks

One way-station of the old sun-cult survives: the Last Lantern, built around the Mother-Lamp, a flame kindled from an ember of the sun itself. Its human crews are long gone — bunks made, kettles cold, diving suits still on the racks. So the Lamp did the only thing a flame can do: it spread. It kindled wicks inside the empty suits, and the suits stood up and went back to work.

You are a Wick — a heavy salvage suit with a small warm flame where a heart would be. No face, no memory, no voice: Wicks speak in light, shuttering their headlamps in blinks and flickers (co-op pings, greetings, and the revive-plea are diegetic lamp-morse). The register is earnest, wordless, and small — warm bodies of light inside a dreadful ocean. (No swimming, and we say so proudly: Wicks are weighted, magnet-booted, and gloriously un-hydrodynamic. This is seafloor infantry, not Subnautica.)

The world model: the tide-line

The game is a tug-of-war between a roguelike and a persistent world, and the rope is light.

• Wherever a lamp burns, the world is permanent. The station; and any pocket where you plant and feed a waypoint-lantern — geography fixed, structures saved, ground buildable.
• Wherever it is dark, the world re-knots. Unlit geography regenerates; every push past the frontier is fresh.
• The player moves the boundary. Permanence is spendable: light a pocket or don't.
• Topology is the strategy (anti-spine rule). Serpent-tides can sever fuel lines and waypoints — and everything downstream of a cut gutters. A minimal spine of lights straight down is one cut from cascade; loops, secondary pockets, and garrisoned junctions are insurance. Breadth vs. depth is therefore a live decision, not a solved one — the colony is hand-shaped because shape is survival.
• The offline rule (committed): the Lamp burns only while a session runs. Guttering is a during-play threat — never a punishment for absence. No friend group ever logs in to a dead net.
• Loss ceiling: the dark takes frontier pockets, never a whole shelf (shelf-regression exists only as an optional hard mode).

Tech model (design commitment): permanence is seed-pinning. The world is a pocket-graph — discrete generated pockets on a graph, not open stitched terrain. Dark pockets generate from a per-descent seed; lighting one pins its seed and saves structure deltas. "The dark re-knots" is a seed change, nearly free.

Session shape: muster at the deepest lit waypoint; a standard descent is hard-capped at ~30–40 minutes by the Bell — the session contract fits in a sentence. Lighting a lantern is a save point in the deepest sense; sessions chapter naturally at lit pockets.

Death & the empty suit

• Your flame is a loan from the Mother-Lamp. Snuffed, the flame goes home; you re-kindle in a rack-spare. The flame is the person; the suit is the gear.
• What regrows vs. what strands (the split): your base grafts regrow cheaply and immediately from the culture library — your kit is functional within minutes of dying, non-negotiable in a skillshot game. What strands with the suit, dark in the deep: cargo (unbanked Lumen + organs), your fixed mutations, and any raw-socketed wild organ. Recovery runs are therefore optional value-runs made with a working build — never mandatory kit-repair with a broken one.
• Suit debt is capped at one. Die on the recovery run and the older suit is dark-claimed — it resurfaces later as a partial salvage lot at the Selkie's counter.
• Party wipe: all stranded suits drift one pocket shallower (the dark spits out what it plays with) — a wipe deep in Midnight never soft-locks the save.
• Carried suits stay loud. A hauled suit counts fully toward party Loudness — no dead-mule stealth logistics.
• Guttering & flame-share: a downed Wick's flame gutters; an ally re-lights it from their own flame (it costs the giver). Solo, the Tender dive-companion (below) can drag a guttering suit toward light.
• The valve: the Selkie retrieves a lost suit for a steep tariff.
• The doppelganger (something wearing your suit, running your build) is the marquee deferred encounter — post-slice, likely post-v1 (it hides an arbitrary-build AI project). Until then a stranded suit is a container the dark relocates by a deterministic server rule — never RNG theft.

Combat & the build system

Feel target: top-down MOBA-grade skillshot combat — manual aim, telegraphs, dashes, cooldown kits, positioning; skill expression over stat checks. In a dark world, light is information, and that is enforced server-side (see multiplayer).

Three layers (Oils are cut — reviews found them a duplicate augment slot):

1. Suit-frames — the chassis; class = silhouette = verb. Slice ships two: the Bathynaut (tide-breaker; anchor-and-crash melee) and the Harpooner (line-and-iron; skillshots, reel-and-drag). Later frames (Bellringer, Lamplighter) are treadmill units.
2. Sparks — abilities as organs harvested from named myths, cultured at the Lantern (permanent collection — knowledge is never lost), grafted into frame sockets (3–4 active + movement). Every button on your bar came from an encounter you remember.
3. Wild mutations — the augment layer. In the deep, your grafted Sparks drink Gloam — kills, vents, blooms — and at paced thresholds (at pocket-clear beats, never mid-combat interrupts) offer a choice of warps (your decoy now bursts, or taunts, or splits). Mutations are gloam-things: they don't survive homecoming — unless you fix one by rendering it in Tallow (candle-making, literally: setting a wild flame in wax). Fix slots are the scarcity: 1 fixed mutation per Spark (a possible 2nd slot very late) — slots, not materials, so the meta can't ossify and in-run variety survives your best players. Raw-socketing a fresh organ mid-descent (wild, over-tuned, gone at homecoming unless cultured) remains the run's recurring temptation.
4. The first evaporation is a scripted gift: on the first homecoming with a mutation, the Keeper names the rule — "gloam doesn't survive the light… unless you set it in tallow" — and hands the party one free Tallow. The rule is taught as a present, not experienced as a theft.

The station: base, industry, automation

The Last Lantern is a working lighthouse; everything meta is a physical place in it — the culture library, the graft-benches, the rack, the Bell, the berths.

• The Lamp is hungry (during play): banked Lumen feeds it; its brightness is the campaign meter and the base's radius — the station physically grows as it brightens.
• Production automation is assignment-based (no spatial factory game): assign Tenders — hermit-crab lamp-keeper constructs under the Klabautermann — to jobs: gardens (chum → Lumen), rendering (chum → Tallow), culturing. Rooms unlock with Lamp level; no placeable machine layouts.
• Fuel lines are spatial — because the map is the meter and a severed line needs a place to be defended. Tenders run fuel along lit roads to waypoint-lanterns; tides target the lines; redundancy is built, not menued. Net size is capped by Lamp level so logistics can never outgrow maintenance.
• The Tender dive-companion (solo support): a solo Wick may take one Tender down. No combat power — it drags your guttering suit toward light, hauls cargo, and can hold a lantern's feed during a tide. It converts the co-op-only verbs (revive, carry, hold-the-line) into degraded-but-present solo verbs, diegetically.

Multiplayer

• 2–4 Wicks, one Lamp, one light-net. Territory, library, and industry are communal; suits, frames, grafts, and holds are personal. Organs culture per-station; grafts grow per-player — no loot competition.
• Brighter is louder — and light is information, enforced by the server. Party light output scales threat draw; each Wick's contribution shows as a Loudness pip on the party HUD. Crucially, your lamp level sets your information radius via netcode relevancy: entities outside your light are not replicated to your client at all. Gamma-cranking cannot reveal what was never sent; dimming is a true trade — quiet for blind.
• Complementary verbs: frames are picked as a dive team; light is shared infrastructure — overlapping radii, flame-share revives, carrying a fallen friend home.
• Hosting model (committed): the Valheim contract — Wicks travel; worlds are saves. Characters (frame, grafts, personal hold) are portable between worlds; the world save (Lamp, light-net, library) is a transferable file any member can host from. Dedicated-server support is post-launch. Nobody's 40 hours are hostage to one person's dinner.

Campaign, endgame & the Dawn

Shape: three shelves — Twilight (blue haze, silhouettes), Midnight (your cone is the world), Hadal (pressure hum, Serpent weather) — gated by crafted suit plating. The campaign meter is the map: how deep the permanent light reaches.

Tides are forecast, not sprung: the Siren sings tide windows in advance — net defense is an event the party plans around (garrison, reinforce, or ride it out), never an interruption that cancels a descent. Escalation with Lamp brightness raises the stakes of the forecast, not the frequency of ambush.

The Dawn — three readings, with their costs committed:

1. Dawn = the sun raised. The world above lives again. The cost: the Wicks' flames are loans from a sun-fragment — raising the sun plausibly recalls the loans. The heroic reading may unmake the protagonists. The Keeper insists on this one, and will not discuss what it costs.
2. Dawn = the crews wake. People are lamps; everyone above went out when the sun did. Reclaimed light is someone's share of morning. The cost: the suits are theirs — the Wicks are keeping seats warm in bodies that have owners. Waking the crews means giving the suits back.
3. Dawn = the Wicks get to stay. A flame that works, grieves, and blinks in morse to its friends is not nothing. The cost: the light spent making Wicks permanent is light not spent on readings 1 or 2. The Serpent whispers this one — which is exactly why it can't be dismissed.

The final act is gameplay, not a menu: at the coil, one Wick must physically carry the reclaimed ember to one of three stations while the others enable — or prevent — the carry. The party's ending is something somebody does with the rest watching, helping, or standing in the way.

Post-Dawn (the endgame page, committed): the chosen reading sets a persistent world-modifier for that world (three replay stories: "the other two Dawns"). Ongoing play is the Anchorite's Penances — a diegetic heat system: the dark bargains for pockets back at escalating modifier tiers, reusing tide-defense and frontier content with the screws turned. The map stays alive after the meter fills.

The cast — tiered, with a mid-run channel

Wicks are wordless; the words live around them. Tiering (a solo dev's writing budget, spent honestly):

• Deep (authored arc): the Keeper — the voice in the Mother-Lamp; warm, tired, evasive about the crews and about reading 1's cost. The tutorial, the Dawn, the payoff.
• Mid (reactive flavor + one questline each, post-slice): the Siren in the Bell — defected wrecker; sings the dark's next arrangement and the tide forecasts; her song bleeds through the hydrophone mid-descent — the run's narrative channel (forecasts, warnings, grief — descents are never silent for hours). The Selkie — quartermaster, salvage-broker, suit-retrieval tariff; her sealskin is somewhere down there.
• Shallow (flavorful vendors until proven): the Klabautermann (Tender-Master; his appearing is the low-Lamp omen), the Anchorite (logbook + Penances), the empty berths (no character at all; the loudest room in the station).
• Tone bible before barks: one page, per-character register bounds (what each is never allowed to joke about), written before any dialogue is generated. Warmth-against-dread is the theme; register drift is its failure mode.

The bestiary — every shore's fear, one water

Named myths are the content unit: fight + Spark + schematic each.

• Twilight (the slice): the Wisp-Choir (gloam swarm-mother; teaches true-vs-false light) · Grindylow packs · Drowners (vodyanoy-kin, washed down) · Wreckers — gloam-casters who counterfeit your beacons and pickups until scanned · one shelf-boss.
• Midnight: Charybdis (the arena rotates) · the Kraken (arms surface before the mantle) · Umibōzu (visible only as an absence occluding bioluminescence) · the Siren Choir (a boss that is a fake lit refuge) · Bakekujira (a whale-fall that gets back up).
• Hadal: Scylla (six necks, six grammars) · the Finfolk Sorcerer (drag-and-teleport duelist) · Aspidochelone (a boss arena on a swimming island) · the Sea-Mother — invented wholesale, no borrowed anatomy: she is the sea's memory of everything it has drowned — a grief-patron who collects what sinks; the deep's beasts bring her cargo, prayers, and names, and she does not give them back. Patron, boss, or both: the late hinge. · The Serpent, whose tide is Hadal's weather long before it is its fight.
• Wandering events (post-slice): the Flying Dutchman · St. Elmo's fire (folklore's good omen, kept good) · whale-falls.
• Naming policy (resolved): real names for public-domain classics (Hades' approach); invented figures where a source is a living tradition.

How the ocean is represented

No swimming. Weighted seafloor operations; the ocean is atmosphere, light, and law: dark ambient and murk ARE the water column, light carves playable space; depth is shelves via Bell pressure-locks, not a Z-axis; enemies get the verticality players don't (swimmers hover in a band, rays cross as shadows, the too-big passes in the background like weather); the water has weather — currents (directional lanes), silt-outs (dread beat), plankton blooms (awe beat + harvest rush), vent fields, whale-falls; buoyancy is feel (slow-tumbling debris, floating knockbacks); "up" is denied diegetically — the surface is a story the Anchorite tells.

Art, audio & the readability law

Look: stylized low-poly (RoR2-lineage), faceted geometry, flat shading, mood carried by dynamic light in murk. Palette: warm gold/amber = light (ours) · cold corpse-green/blue = gloam · lure-red = bait · white-hot = conversion.

The readability law (binding, from review):

1. Value first, hue second: every warm/cold distinction is also carried by luminance value, shape language, and flicker-cadence (steady = true, flicker = false — the load-bearing channel; hue is the garnish). This is the colorblind answer (gold-vs-green is a worst-case red-green pair) and the ontology made visible.
2. Design Midnight's floor for the video encoder, not the OLED: bioluminescent ground-clutter density is the streamability dial; dark scenes must survive 6–8 Mbps without macroblocking. A capture/photo grade (slightly lifted, saturated profile distinct from the play grade) ships for clips and screenshots.
3. Screenshot discipline: every promotional frame must read at 200 px with a warm focal light AND a legible silhouette.

Audio: hydrophone world — pressure creaks, the Bell's toll, lamp-morse chirps (the Wicks' voice; procedural, no VO), the Siren's verses bleeding through mid-descent, and silence-with-texture where the light runs out.

Blender on-ramp (easiest→hardest): glow-props & gardens (geometry-node-native) → organs/pickups (blobby, emissive, forgiving) → creatures (abyssal = anatomy-optional) → suit-frames (hard-surface kitbash on a humanoid rig).

Scope ladder (the review's non-negotiable)

Tier	Contents
Vertical slice (the 0.1 — Roadmap_Lantern_Slice)	One shelf (Twilight) as a pocket-graph · 2 frames · 8–10 Sparks · mutations at 2 paced thresholds (2–3 choices) + raw-socketing + Tallow fixing (1 slot) · death split (strand cargo/mutations; cheap regrow; ally-carry; Selkie tariff; solo Tender companion) · hand-fed lanterns, seed-pinned permanence, session-only burn · 3–4 named encounters (Wisp-Choir, Grindylow, Wreckers, shelf-boss) · brighter-is-louder + relevancy-light · Keeper + Siren only · one scripted Serpent-tide as the slice finale
v1.0	Shelves 2–3 + plating gates · severable fuel-net + Tenders + Klabautermann · full Twilight/Midnight/Hadal bestiary · forecast tide system · Selkie + Anchorite questlines · the Dawn (final carry) + post-Dawn Penances · 3rd/4th frames · wandering events
Post-launch	The doppelganger encounter (suit wearing your build) · dedicated servers · shelf-regression hard mode · new frames/myths as treadmill units · the berths' full story
Cut	Oils (mutations are the augment layer) · spatial production machinery (assignment-based instead) · open stitched terrain (pocket-graph instead)

The slice's falsifiable test: does pinning a pocket feel like winning something, and does a stranded suit feel worth a second descent? If both are yes, every deferred system has soil to grow in. If either is no, no amount of Klabautermann fixes it.

Resolved & remaining forks

Resolved (this review cycle, operator-accepted): naming policy (real classics / invented for living traditions) · suit-loss = the split model · mutation economy = fix slots, not materials · territory loss = pockets only · Oils cut · offline rule = session-only burn · hosting = characters travel, worlds are saves · solo Tender companion = in.

Remaining open: the crews — present-but-unlit in the berths vs. gone entirely (a content-cost call for the narrative milestone) · the shipping title.

Related

• Roadmap_Lantern_Slice — the vertical-slice implementation roadmap
• Theme_Direction_Candidates — the exploration and research patterns underneath this
• Pillars — co-op, server-authority, skill-expression: the constraints this was shaped inside
• Identity — the prior identity, superseded by this draft upon adoption