diff --git a/packages/mnswpr/core/index.d.ts b/packages/mnswpr/core/index.d.ts
index ec3523f..cfc922b 100644
--- a/packages/mnswpr/core/index.d.ts
+++ b/packages/mnswpr/core/index.d.ts
@@ -2,6 +2,13 @@ export { Grid } from "./grid/grid.js";
 export { GameSession } from "./session/session.js";
 export { replay } from "./session/replay.js";
 export { levels } from "../levels.js";
+export type Layout = import("./minesweeper/board.js").Layout;
+export type LayoutCell = import("./minesweeper/board.js").LayoutCell;
+export type Config = import("./minesweeper/board.js").Config;
+export type Move = import("./minesweeper/rules.js").Move;
+export type MoveEvent = import("./minesweeper/rules.js").MoveEvent;
+export type MoveEventType = import("./minesweeper/rules.js").MoveEventType;
+export type Phase = import("./minesweeper/rules.js").Phase;
 export { eightWay, orthogonal } from "./grid/neighbors.js";
 export { toJSON, fromJSON } from "./grid/serialize.js";
 export { mulberry32, randInt } from "./session/rng.js";
diff --git a/packages/mnswpr/core/index.js b/packages/mnswpr/core/index.js
index c43f829..fd0872d 100644
--- a/packages/mnswpr/core/index.js
+++ b/packages/mnswpr/core/index.js
@@ -23,3 +23,15 @@ export { generateBoard, validateLayout } from './minesweeper/board.js'
 
 // Shared level presets (also consumed by the DOM client)
 export { levels } from '../levels.js'
+
+// Public type aliases — re-exported so consumers can
+// `import type { Layout, … } from '@cozy-games/mnswpr/core'` against the barrel,
+// without reaching into internal `core/minesweeper/*` modules or an ambient shim.
+// These are type-only; they add nothing to the runtime bundle.
+/** @typedef {import('./minesweeper/board.js').Layout} Layout */
+/** @typedef {import('./minesweeper/board.js').LayoutCell} LayoutCell */
+/** @typedef {import('./minesweeper/board.js').Config} Config */
+/** @typedef {import('./minesweeper/rules.js').Move} Move */
+/** @typedef {import('./minesweeper/rules.js').MoveEvent} MoveEvent */
+/** @typedef {import('./minesweeper/rules.js').MoveEventType} MoveEventType */
+/** @typedef {import('./minesweeper/rules.js').Phase} Phase */
diff --git a/packages/mnswpr/package.json b/packages/mnswpr/package.json
index a0143d8..ae3fb34 100644
--- a/packages/mnswpr/package.json
+++ b/packages/mnswpr/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cozy-games/mnswpr",
-  "version": "0.5.2",
+  "version": "0.5.3",
   "description": "Classic Minesweeper browser game",
   "author": "Ayo",
   "type": "module",