diff --git a/AGENTS.md b/AGENTS.md
index c35d9b7..2185952 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -4,7 +4,7 @@ Guidance for AI coding agents working in this repository.
 
 ## What this is
 
-Classic Minesweeper as a vanilla web game — no framework, no TypeScript (JSDoc + `// @ts-check` only). Deployed at [mnswpr.com](https://mnswpr.com) (Netlify) and published to npm as `@ayo-run/mnswpr`. The game engine has **zero runtime dependencies**; only the website adds Firebase.
+Classic Minesweeper as a vanilla web game — no framework, no TypeScript (JSDoc + `// @ts-check` only). Deployed at [mnswpr.com](https://mnswpr.com) (Netlify) and published to npm as `@cozy-games/mnswpr`. The game engine has **zero runtime dependencies**; only the website adds Firebase.
 
 **`mnswpr` is the main test app.** It's the reference app for the monorepo and the default target for local runs — `.claude/launch.json` launches it (`dev` on :5173, `preview` on :4173), and it's what you should build/run/preview when verifying changes to the shared packages or tooling.
 
@@ -79,8 +79,8 @@ Node version: `.nvmrc` pins `lts/*`.
 
 This is the **Cozy Games** monorepo. Workspaces are declared in `pnpm-workspace.yaml` as `apps/*`, `packages/*`, and `sites/*`. `utils/` is now a real workspace package (`@cozy-games/utils`), imported by name — no more `../utils` relative paths.
 
-- **`apps/mnswpr/`** — package `mnswpr`, `@ayo-run/mnswpr`'s host, the mnswpr.com website. Consumes the engine and leaderboard via `workspace:*` (`import mnswpr from '@ayo-run/mnswpr/mnswpr.js'`) and wires them together in `apps/mnswpr/main.js`. Owns its Firebase config (`firebase.json`, `firestore.rules`, `.firebaserc`) and app-specific scripts (`apps/mnswpr/scripts/`). A future app (e.g. sudoku) gets its own `apps/<name>/` and its `package.json` `name` is just the app name (`<name>`, unscoped) so it's addressable directly by name (`pnpm -F <name> run <script>`).
-- **`packages/mnswpr/`** — `@ayo-run/mnswpr`, the standalone, framework-free game engine published to npm. `packages/mnswpr/mnswpr.js` is the whole engine; `levels.js` defines the four difficulty presets. Depends only on `@cozy-games/utils`.
+- **`apps/mnswpr/`** — package `mnswpr`, `@cozy-games/mnswpr`'s host, the mnswpr.com website. Consumes the engine and leaderboard via `workspace:*` (`import mnswpr from '@cozy-games/mnswpr/mnswpr.js'`) and wires them together in `apps/mnswpr/main.js`. Owns its Firebase config (`firebase.json`, `firestore.rules`, `.firebaserc`) and app-specific scripts (`apps/mnswpr/scripts/`). A future app (e.g. sudoku) gets its own `apps/<name>/` and its `package.json` `name` is just the app name (`<name>`, unscoped) so it's addressable directly by name (`pnpm -F <name> run <script>`).
+- **`packages/mnswpr/`** — `@cozy-games/mnswpr`, the standalone, framework-free game engine published to npm. `packages/mnswpr/mnswpr.js` is the whole engine; `levels.js` defines the four difficulty presets. Depends only on `@cozy-games/utils`.
 - **`packages/leaderboard/`** — `@cozy-games/leaderboard`, a backend-agnostic, time-windowed leaderboard (adapter-injected storage).
 - **`packages/utils/`** — `@cozy-games/utils`, shared services with no dependencies, re-exported from `index.js`: `StorageService`, `TimerService` (`pretty()` time formatting used by both engine and leaderboard), `LoggerService`, `LoadingService`, and date-bucket helpers.
 - **`sites/`** — docs (Astro Starlight) and UI demos. Placeholders for now.
diff --git a/apps/mnswpr/README.md b/apps/mnswpr/README.md
index 259b206..b72d5e2 100644
--- a/apps/mnswpr/README.md
+++ b/apps/mnswpr/README.md
@@ -20,14 +20,14 @@ The goal is to reveal every safe cell without detonating a mine. Your **first cl
 The web is a wonderful, free, and open platform to create and distribute value. You can use **mnswpr** in different ways:
 
 - as a deployed [web app](https://mnswpr.com)
-- as a [library](https://npmx.dev/package/@ayo-run/mnswpr) with `npm i @ayo-run/mnswpr`
+- as a [library](https://npmx.dev/package/@cozy-games/mnswpr) with `npm i @cozy-games/mnswpr`
 - as a `web component` (coming soon).
 
 Using it as a library takes only a few lines — mount it onto any element by `id`:
 
 ```js
-import '@ayo-run/mnswpr/mnswpr.css'
-import mnswpr from '@ayo-run/mnswpr'
+import '@cozy-games/mnswpr/mnswpr.css'
+import mnswpr from '@cozy-games/mnswpr'
 
 const game = new mnswpr('app')
 game.initialize()
diff --git a/apps/mnswpr/main.js b/apps/mnswpr/main.js
index 542eae6..28f1fc3 100644
--- a/apps/mnswpr/main.js
+++ b/apps/mnswpr/main.js
@@ -1,7 +1,7 @@
-import mnswpr from '@ayo-run/mnswpr/mnswpr.js'
-import '@ayo-run/mnswpr/mnswpr.css'
+import mnswpr from '@cozy-games/mnswpr/mnswpr.js'
+import '@cozy-games/mnswpr/mnswpr.css'
 import '@cozy-games/utils/loading/loading.css'
-import * as pkg from '@ayo-run/mnswpr/package.json'
+import * as pkg from '@cozy-games/mnswpr/package.json'
 import { configureLeaderboard } from '@cozy-games/leaderboard/leaderboard-element.js'
 import { FirebaseAdapter } from '@cozy-games/leaderboard/adapters/firebase.js'
 import { NicknameService } from './modules/nickname/nickname.js'
diff --git a/apps/mnswpr/package.json b/apps/mnswpr/package.json
index d6dbe35..0a477db 100644
--- a/apps/mnswpr/package.json
+++ b/apps/mnswpr/package.json
@@ -18,7 +18,7 @@
     "db:stop": "pkill -f '[c]loud-firestore-emulator'; pkill -f '[f]irebase.* emulators:'; true"
   },
   "devDependencies": {
-    "@ayo-run/mnswpr": "workspace:*",
+    "@cozy-games/mnswpr": "workspace:*",
     "@cozy-games/leaderboard": "workspace:*",
     "@cozy-games/utils": "workspace:*",
     "firebase": "^12.11.0",
diff --git a/apps/mnswpr/scripts/export-legends.js b/apps/mnswpr/scripts/export-legends.js
index a1c8f34..fb8b128 100644
--- a/apps/mnswpr/scripts/export-legends.js
+++ b/apps/mnswpr/scripts/export-legends.js
@@ -17,7 +17,7 @@ import {
   getFirestore, getDocs, collection, query, orderBy, limit
 } from 'firebase/firestore/lite'
 
-import { levels } from '@ayo-run/mnswpr/levels.js'
+import { levels } from '@cozy-games/mnswpr/levels.js'
 
 // Mirror of TimerService.pretty() (@cozy-games/utils timer) — inlined so this
 // generator has no cross-module import chain to resolve under raw Node.
diff --git a/docs/decisions/0001-package-boundary.md b/docs/decisions/0001-package-boundary.md
index ebb069c..393c6f4 100644
--- a/docs/decisions/0001-package-boundary.md
+++ b/docs/decisions/0001-package-boundary.md
@@ -3,7 +3,7 @@
 **Status:** Accepted · **Repo:** cozy-games · **Date:** 2026-07
 
 ## Context
-cozy-games is a collection of reusable game modules (`@ayo-run/mnswpr`, the
+cozy-games is a collection of reusable game modules (`@cozy-games/mnswpr`, the
 leaderboard package, future extractions). Applications built on these packages
 differ in how they store data, authenticate users, and enforce rules.
 
diff --git a/package.json b/package.json
index 48fe6e3..22828c8 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "build": "pnpm -r --filter \"./packages/*\" run build",
     "build:lib": "vite build packages/mnswpr",
     "publish:lib": "node scripts/publish-lib.js",
-    "release": "pnpm build:lib && pnpm -F @ayo-run/mnswpr run release && pnpm publish:lib",
+    "release": "pnpm build:lib && pnpm -F @cozy-games/mnswpr run release && pnpm publish:lib",
     "postinstall": "node scripts/ensure-java.mjs",
     "prepare": "husky",
     "lint": "eslint .",
diff --git a/packages/mnswpr/TUTORIAL.md b/packages/mnswpr/TUTORIAL.md
index dc06f49..f3893d8 100644
--- a/packages/mnswpr/TUTORIAL.md
+++ b/packages/mnswpr/TUTORIAL.md
@@ -61,7 +61,7 @@ npm i -D vite
 Now that the JS project is initialized and we have a development environment with `vite`, we will install **mnswpr** as a dependency:
 
 ```bash
-npm i @ayo-run/mnswpr
+npm i @cozy-games/mnswpr
 ```
 
 Finally, you can run the installed `vite` dev server by running the following:
@@ -141,8 +141,8 @@ Create a new file named `main.js` with the following content:
 /**
  * main.js
  */
-import '@ayo-run/mnswpr/mnswpr.css'
-import mnswpr from '@ayo-run/mnswpr'
+import '@cozy-games/mnswpr/mnswpr.css'
+import mnswpr from '@cozy-games/mnswpr'
 
 const game = new mnswpr('app')
 game.initialize()
diff --git a/packages/mnswpr/core/index.js b/packages/mnswpr/core/index.js
index 967d306..c43f829 100644
--- a/packages/mnswpr/core/index.js
+++ b/packages/mnswpr/core/index.js
@@ -1,7 +1,7 @@
 // @ts-check
 
 /**
- * `@ayo-run/mnswpr/core` — the headless, isomorphic Minesweeper core. No DOM, no
+ * `@cozy-games/mnswpr/core` — the headless, isomorphic Minesweeper core. No DOM, no
  * wall clock. Runs identically in a browser (offline play) or on a server
  * (authoritative timing / replay verification). See
  * docs/headless-core-and-client-design.md.
diff --git a/packages/mnswpr/core/minesweeper/board.js b/packages/mnswpr/core/minesweeper/board.js
index 65a4789..47e2bf5 100644
--- a/packages/mnswpr/core/minesweeper/board.js
+++ b/packages/mnswpr/core/minesweeper/board.js
@@ -146,7 +146,7 @@ export function validateLayout(layout) {
 /**
  * Pure, Node-runnable board generation: given a size, a mine count, and an
  * injected RNG, produce a plain layout object — no DOM, no I/O, no `Grid` class
- * leaking out. This is the headless entry point behind `@ayo-run/mnswpr/core`;
+ * leaking out. This is the headless entry point behind `@cozy-games/mnswpr/core`;
  * the DOM client reaches the same generator lazily through `MinesweeperRules`.
  *
  * The injected `rng` is the determinism seam: the same rng sequence always
diff --git a/packages/mnswpr/docs/headless-core-and-client-design.md b/packages/mnswpr/docs/headless-core-and-client-design.md
index 7b03ff6..ac77c6d 100644
--- a/packages/mnswpr/docs/headless-core-and-client-design.md
+++ b/packages/mnswpr/docs/headless-core-and-client-design.md
@@ -1,4 +1,4 @@
-# Headless core + client design — `@ayo-run/mnswpr/core` and the client that consumes it
+# Headless core + client design — `@cozy-games/mnswpr/core` and the client that consumes it
 
 Design for splitting the Minesweeper engine into a **headless, isomorphic core**
 (runs identically in a browser or on a server) and a **thin client** that renders
@@ -23,12 +23,12 @@ Goals, in priority order:
 ## 1. Package layout & the seam
 
 **Decision (settled): one published package, core exposed as a sub-path.** Open-
-source consumers keep installing a single `@ayo-run/mnswpr` and get the headless
-core for free at `@ayo-run/mnswpr/core` — no second package to publish, version,
+source consumers keep installing a single `@cozy-games/mnswpr` and get the headless
+core for free at `@cozy-games/mnswpr/core` — no second package to publish, version,
 or document. The DOM client stays the default entry (`.`).
 
 ```
-packages/mnswpr/                 # @ayo-run/mnswpr — ONE published package
+packages/mnswpr/                 # @cozy-games/mnswpr — ONE published package
   mnswpr.js                      # "."       → DOM client (browser entry; today's default)
   levels.js                      # shared by client + core (level presets)
   core/                          # "./core"  → headless, isomorphic, ZERO DOM, ZERO wall-clock
@@ -66,8 +66,8 @@ packages/mnswpr/                 # @ayo-run/mnswpr — ONE published package
 }
 ```
 
-- `import mnswpr from '@ayo-run/mnswpr'` → DOM client, exactly as today.
-- `import { GameSession, MinesweeperRules } from '@ayo-run/mnswpr/core'` → headless.
+- `import mnswpr from '@cozy-games/mnswpr'` → DOM client, exactly as today.
+- `import { GameSession, MinesweeperRules } from '@cozy-games/mnswpr/core'` → headless.
   The core entry pulls in **zero DOM**, so a server (later) imports it without
   dragging in browser code, and the browser bundle for `.` never includes the
   core's server-only helpers.
@@ -85,7 +85,7 @@ layering are orthogonal. Rules of the seam:
 
 When Sudoku lands, `core/grid/` and `core/session/` move out verbatim into
 `@cozy-games/grid` + `@cozy-games/game-session`; `core/minesweeper/` (and a new
-`sudoku/`) depend on them, and `@ayo-run/mnswpr/core` re-exports from them so the
+`sudoku/`) depend on them, and `@cozy-games/mnswpr/core` re-exports from them so the
 consumer-facing sub-path is unchanged.
 
 ---
@@ -346,7 +346,7 @@ Minesweeper(appId, version, {
 | Needs a host tier | no | yes (Function/Worker + session store) |
 | Use | offline play, published npm engine | host-owned sessions |
 
-The published `@ayo-run/mnswpr` stays fully functional standalone (Local mode).
+The published `@cozy-games/mnswpr` stays fully functional standalone (Local mode).
 Running on a host opts into Remote. Same renderer, same input, same rules.
 
 ---
@@ -425,7 +425,7 @@ appear in `core/` outside the injected `clock`/`rng` seams.
 
 ## 11. Open decisions
 
-- **Package boundary:** ✅ *resolved* — one `@ayo-run/mnswpr` package, core at the
+- **Package boundary:** ✅ *resolved* — one `@cozy-games/mnswpr` package, core at the
   `./core` sub-path (§1). Extraction to `@cozy-games/grid` + `@cozy-games/game-session`
   deferred to when Sudoku lands; the sub-path stays stable across that move.
 - **Host mode (replay-validation vs live authority):** *deferred.* Ship
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index bfc6eae..df6ab88 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -50,12 +50,12 @@ importers:
 
   apps/mnswpr:
     devDependencies:
-      '@ayo-run/mnswpr':
-        specifier: workspace:*
-        version: link:../../packages/mnswpr
       '@cozy-games/leaderboard':
         specifier: workspace:*
         version: link:../../packages/leaderboard
+      '@cozy-games/mnswpr':
+        specifier: workspace:*
+        version: link:../../packages/mnswpr
       '@cozy-games/utils':
         specifier: workspace:*
         version: link:../../packages/utils
diff --git a/scripts/publish-lib.js b/scripts/publish-lib.js
index a736602..971fe72 100644
--- a/scripts/publish-lib.js
+++ b/scripts/publish-lib.js
@@ -1,4 +1,4 @@
-// Publishes @ayo-run/mnswpr to npm using the mnswpr app README.md as the
+// Publishes @cozy-games/mnswpr to npm using the mnswpr app README.md as the
 // package's README (what npmjs.com displays).
 //
 // packages/mnswpr/README.md is a generated copy (gitignored) — the source of