diff --git a/app/game-api/src/auth/accessTokenStore.ts b/app/game-api/src/auth/accessTokenStore.ts
index b69322f..ac975cd 100644
--- a/app/game-api/src/auth/accessTokenStore.ts
+++ b/app/game-api/src/auth/accessTokenStore.ts
@@ -1,6 +1,6 @@
 import { randomUUID } from 'node:crypto';
 
-import type { GameSessionTokenPayload } from '@sammo-ts/common';
+import type { GameSessionTokenPayload } from '@sammo-ts/common/auth/gameToken';
 import { isValid, parseISO } from 'date-fns';
 
 interface RedisClientLike {
diff --git a/app/game-api/src/auth/tokenVerifier.ts b/app/game-api/src/auth/tokenVerifier.ts
index cc3f8ce..71426cb 100644
--- a/app/game-api/src/auth/tokenVerifier.ts
+++ b/app/game-api/src/auth/tokenVerifier.ts
@@ -1,5 +1,5 @@
-import type { GameSessionTokenPayload } from '@sammo-ts/common';
-import { decryptGameSessionToken } from '@sammo-ts/common';
+import type { GameSessionTokenPayload } from '@sammo-ts/common/auth/gameToken';
+import { decryptGameSessionToken } from '@sammo-ts/common/auth/gameToken';
 import { isAfter, isValid, parseISO } from 'date-fns';
 
 import type { FlushStore } from './flushStore.js';
diff --git a/app/game-api/src/context.ts b/app/game-api/src/context.ts
index c3c2864..3ba9ced 100644
--- a/app/game-api/src/context.ts
+++ b/app/game-api/src/context.ts
@@ -1,5 +1,5 @@
 import { z } from 'zod';
-import type { GameSessionTokenPayload } from '@sammo-ts/common';
+import type { GameSessionTokenPayload } from '@sammo-ts/common/auth/gameToken';
 import type { DatabaseClient as InfraDatabaseClient, RedisConnector, GamePrisma } from '@sammo-ts/infra';
 
 import type { TurnDaemonTransport } from './daemon/transport.js';
diff --git a/app/game-api/src/router/auth/index.ts b/app/game-api/src/router/auth/index.ts
index 252222c..aa7b4ea 100644
--- a/app/game-api/src/router/auth/index.ts
+++ b/app/game-api/src/router/auth/index.ts
@@ -1,9 +1,9 @@
 import { TRPCError } from '@trpc/server';
-import { decryptGameSessionToken } from '@sammo-ts/common';
+import { decryptGameSessionToken } from '@sammo-ts/common/auth/gameToken';
 import { isAfter, isValid, parseISO } from 'date-fns';
 import { z } from 'zod';
 
-import type { GameSessionTokenPayload } from '@sammo-ts/common';
+import type { GameSessionTokenPayload } from '@sammo-ts/common/auth/gameToken';
 import { procedure, router } from '../../trpc.js';
 
 const parseDate = (value: string): Date | null => {
diff --git a/app/game-api/src/server.ts b/app/game-api/src/server.ts
index af620d8..897266d 100644
--- a/app/game-api/src/server.ts
+++ b/app/game-api/src/server.ts
@@ -1,7 +1,8 @@
 import fastify, { type FastifyRequest } from 'fastify';
 import cors from '@fastify/cors';
 import { fastifyTRPCPlugin } from '@trpc/server/adapters/fastify';
-import { buildGameEventChannel, type GameSessionTokenPayload } from '@sammo-ts/common';
+import { buildGameEventChannel } from '@sammo-ts/common';
+import type { GameSessionTokenPayload } from '@sammo-ts/common/auth/gameToken';
 import {
     createGamePostgresConnector,
     createRedisConnector,
diff --git a/app/game-api/test/router.test.ts b/app/game-api/test/router.test.ts
index 458dc47..001a05b 100644
--- a/app/game-api/test/router.test.ts
+++ b/app/game-api/test/router.test.ts
@@ -15,7 +15,7 @@ import { InMemoryTurnDaemonTransport } from '../src/daemon/inMemoryTransport.js'
 import { InMemoryFlushStore } from '../src/auth/flushStore.js';
 import { RedisAccessTokenStore } from '../src/auth/accessTokenStore.js';
 import { appRouter } from '../src/router.js';
-import type { GameSessionTokenPayload } from '@sammo-ts/common';
+import type { GameSessionTokenPayload } from '@sammo-ts/common/auth/gameToken';
 
 const profile: GameProfile = {
     id: 'che',
diff --git a/app/gateway-api/src/router.ts b/app/gateway-api/src/router.ts
index 61a3acc..29e9fce 100644
--- a/app/gateway-api/src/router.ts
+++ b/app/gateway-api/src/router.ts
@@ -4,7 +4,7 @@ import { TRPCError } from '@trpc/server';
 import { addHours, addSeconds, isAfter, isValid, parseISO } from 'date-fns';
 import { z } from 'zod';
 
-import { decryptGameSessionToken, encryptGameSessionToken } from '@sammo-ts/common';
+import { decryptGameSessionToken, encryptGameSessionToken } from '@sammo-ts/common/auth/gameToken';
 
 import { procedure, router } from './trpc.js';
 import { toPublicUser } from './auth/userRepository.js';
diff --git a/packages/common/package.json b/packages/common/package.json
index 9e211b8..6b80d52 100644
--- a/packages/common/package.json
+++ b/packages/common/package.json
@@ -5,9 +5,19 @@
     "type": "module",
     "main": "dist/index.js",
     "types": "dist/index.d.ts",
+    "exports": {
+        ".": {
+            "types": "./dist/index.d.ts",
+            "default": "./dist/index.js"
+        },
+        "./auth/gameToken": {
+            "types": "./dist/auth/gameToken.d.ts",
+            "default": "./dist/auth/gameToken.js"
+        }
+    },
     "scripts": {
-        "build": "tsdown -c ../../tsdown.config.ts -F @sammo-ts/common",
-        "dev": "tsdown -c ../../tsdown.config.ts -F @sammo-ts/common --watch",
+        "build": "tsdown -c ./tsdown.config.ts",
+        "dev": "tsdown -c ./tsdown.config.ts --watch",
         "lint": "eslint .",
         "lint:fix": "eslint . --fix",
         "test": "vitest run --config vitest.config.ts",
diff --git a/packages/common/src/index.ts b/packages/common/src/index.ts
index e816d0d..738fe0f 100644
--- a/packages/common/src/index.ts
+++ b/packages/common/src/index.ts
@@ -1,5 +1,4 @@
 export * from './rng.js';
-export * from './auth/gameToken.js';
 export * from './time/Clock.js';
 export * from './util/BytesLike.js';
 export * from './util/convertBytesLikeToArrayBuffer.js';
diff --git a/packages/common/tsdown.config.ts b/packages/common/tsdown.config.ts
new file mode 100644
index 0000000..4cadf17
--- /dev/null
+++ b/packages/common/tsdown.config.ts
@@ -0,0 +1,18 @@
+import { defineConfig } from 'tsdown';
+
+export default defineConfig({
+    entry: {
+        index: 'src/index.ts',
+        'auth/gameToken': 'src/auth/gameToken.ts',
+    },
+    format: 'es',
+    outDir: 'dist',
+    dts: {
+        build: true,
+    },
+    sourcemap: true,
+    target: 'node22',
+    platform: 'node',
+    fixedExtension: false,
+    hash: false,
+});
diff --git a/tools/integration-tests/tsconfig.json b/tools/integration-tests/tsconfig.json
index 8d01748..13251ee 100644
--- a/tools/integration-tests/tsconfig.json
+++ b/tools/integration-tests/tsconfig.json
@@ -1,5 +1,5 @@
 {
-    "extends": "../../tsconfig.base.json",
+    "extends": "../../tsconfig.paths.json",
     "compilerOptions": {
         "types": ["node"],
         "noEmit": true