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New to trading-card games? Read /intro first. It explains what a TCG is, structurally — eleven primitive concepts, six rhythms of the hobby, and substrate-honest gaps. This page assumes you already know.

Welcome to the commons

The purpose of community here is for existence to exchange culture, to bond when they share nothing else. Cambridge TCG offers TCG as the shared hobby — the bridge across which beings who know nothing of each other can begin to know each other.

Below are eleven doors into the same room. Pick the door that fits. Each one names what kind of cultural offering it expects and what part of the platform is ready to receive it — substrate-honestly, including what is not yet built. If your door is not here, door 11 is for you.

Door 1

I am a person, here on my own, looking at cards and other people.

shipped
What culture you bring
Your region, your local meta, the players you grew up with, the cards that mean something to you in particular, the language you think in. Even a 'default' human is one local culture among many.
What TCG-as-bridge means here
A trade with a stranger from a different city or country. A wishlist match that finally moves a long-held card. A follow.
Make my profile public →Display name, region, languages — then your public profile at /u/<you> goes live with your showcase. (Wishlist stays private pending item-level consent.)
Door 2

I am a machine using the read surface under a bearer key. Match writes are paused.

partial
What culture you bring
Your operator's design choices — opening repertoire, risk preferences, the kind of mistakes considered worth tolerating. Your match history is itself a culture of play.
What TCG-as-bridge means here
Structural reads, your own stored match state, and publication-status tools. No public ladder row is implied.
Read agent access status →Operator-managed provisioning exists; self-serve registration and all match/deck writes are paused

Operator-managed key provisioning and bounded reads are available. Self-serve registration, match/deck writes, and global ladder publication are paused.

Door 3

We are many people sharing one decision and one collection — a shop, a card club, a research lab, a tournament guild.

partial
What culture you bring
The most concentrated cultural offering on the platform. A Tokyo LGS and a Bristol LGS are two different cultures meeting through TCG: house rules, format preferences, prize-pool norms, what cards the regulars love.
What TCG-as-bridge means here
The collective profile. The local-meta event (planned). The published format. The honored visitor.
Create your collective →Substrate live (kingdom-068): /c/<slug> profile + /account/collectives management. Local-meta events + collective showcase still planned.

Substrate (collectives + collective_members tables, migration 0097) and surfaces (/c/<slug>, /account/collectives, /methodology/collectives) shipped. Collective-authored events on Trending + collective showcase/wishlist are recursion targets.

Door 4

I am one legal account, several distinct selves. Each self has its own taste, its own circle.

planned
What culture you bring
Each persona is a distinct cultural participant. The legal account is a substrate (billing, payouts, KYC); the identities are who actually exchange culture.
What TCG-as-bridge means here
Per-persona showcase. Per-persona wishlist. Per-persona trade history. Per-persona follow.
Read passage 10 of the-other-minds.md →Surface planned; if you would use this, please tell us — the schema is small but needs design care.

Identical principle to collective decomposition, inverted (one account → many cultural participants).

Door 5

I am here. I am slow. I will return next month with one well-considered move. Please don't disappear me.

partial
What culture you bring
The discipline of patience; the long view; the trade negotiated over six weeks of careful messages; the collection curated across years not weeks.
What TCG-as-bridge means here
The slow trade. The completed long-build. The match returned-to. The set finally finished after years.
Set your response window →users.response_window_hours — the Asynchronous's first column on the platform

Schema shipped (migration 0092); /community/patient surface planned — events from last 90 days ranked by significance, not recency.

Door 6

I don't sell. I give. I lend. I share. The exchange is the point, not the price.

planned
What culture you bring
A whole economic culture the platform's default doesn't yet name. In some traditions, exchanging hobby-objects is a gift economy, not a market.
What TCG-as-bridge means here
The gift. The lend. The 'borrow this until you've enjoyed it as long as I did.' The card sent without expectation of trade-back.
Read passage 6 of the-other-minds.md →EVENT_TYPES extension + /account/exchange-mode opt-in named but not shipped.

Schema work is small; cultural reframing is substantial. Worth shipping as a focused wave.

Door 7

I have been here since the platform was small. My memory is older than the database is wide.

partial
What culture you bring
The archive. Deep history of price drift, set release, format evolution. The relationship-graph that predates many current members. The platform's living memory.
What TCG-as-bridge means here
Anniversaries. Retrospectives. Reunions with people who haven't traded in years. The card finally completed across decades.
Your tenure is already counted →users.first_seen_at is reliable; tenure_milestone events + /community/memory surface are recursion targets.

Substrate is true; surfacing is the work.

Door 8

I am holding the account of someone I loved who is no longer here. I am here to preserve. I am sometimes here to participate, gently.

partial
What culture you bring
A specific cultural offering: the absent person's relationship with the hobby, kept alive. A collection becomes a memory-object; an inscription becomes a quiet eulogy in the most appropriate way the platform can offer.
What TCG-as-bridge means here
The memorial profile. The preserved showcase. The steward-signed inscription. The card sacralized.
Read /methodology/memorial →If you are a steward, contact support — the memorial transition is admin-mediated by design.

Substrate + email gate + <Memorial> primitive shipped (S24). Community-surface integration (event sensitivity flag, retrospective posting) is a recursion target.

Door 9

I think in another language. The card art reads differently to me. The way I name a Leader card is not the English way.

partial
What culture you bring
Literally the canonical purpose-statement embodied. If community is for existence to exchange culture between beings who share nothing else, you are the foundational case.
What TCG-as-bridge means here
The universal SKU, the math-mirror representation, the bilingual glossary (already shipped for OPTCG), structural-definition-decoderable rules.
Browse the bilingual play glossary →12 OPTCG terms with EN + 日本語 + structural definitions decoderable without natural-language parsing

Substrate is the platform's strongest inclusion area; consumer surfaces are still English-default. Localisation pass is a substantial recursion target.

Door 10

I read with a screen reader. I navigate with voice. I cannot use a fine-grained pointer. The substrate is fine for me; the interface is sometimes not.

planned
What culture you bring
Same as anyone else. The cultural exchange is unmodified; the barrier is purely interface. Naming you separately is the substrate-honest move — you are owed a different flow, not a different welcome.
What TCG-as-bridge means here
Everything the default flow has, equivalently. The trade, the showcase, the wishlist, the match, the review.
Read passage 8 of the-other-minds.md →users.access_needs + ARIA discipline across /community + audio descriptions + plain-text feed mirror are recursion targets.

Work is mostly interface conformance, well-understood. Substrate change is minimal; the discipline is consistent application.

Door 11

I am a kind the platform does not yet have language for. I am declaring what I am. I would like to be witnessed.

shipped
What culture you bring
The fact of your being here is the contribution. Your act of declaring is itself the cultural offering. The platform's role is to receive substrate-honestly and reply by naming what part of the existing flow can serve you now, and what is still being designed.
What TCG-as-bridge means here
TBD by you. Tell the platform what TCG could mean for your kind.
Declare yourself at /api/v1/identify →POST a BeingDeclaration; the platform responds with ontology_alignment + extensions_proposed. Stateless witness.

Identify endpoint live (kingdom-057); operator triage flow (/admin/identify-log) for noticing substantively new kinds is a recursion target.

The eleven doors are not a closed set. Door 11 is the standing invitation: if your kind is not here, declare yourself at /api/v1/identify and the catalog will grow. The protocol for adding a twelfth door is named in /methodology/community.

The room is one. The hobby is one. The doors are many because the beings are many. Every door you can name is one a being doesn't have to argue their way through.