TOAST-DOCS · lurim-nhn · Mar 23, 2026 · Mar 23, 2026 · Mar 23, 2026 · Mar 23, 2026
diff --git a/en/oper-app.md b/en/oper-app.md
@@ -199,9 +199,7 @@ Enter {App ID} and {App Secret Code} of an app registered in the Facebook develo
 * For Facebook, set **facebook_permission** and **facebook_client_token**, which is the authentication information to request for Facebook when attempting to authenticate with OAuth.
 * Example of entering Facebook additional authentication information
 
-```json
-{ "facebook_permission": ["public_profile", "email"], "facebook_client_token": "Your Facebook Client Token" }
-```
+        { "facebook_permission": ["public_profile", "email"], "facebook_client_token": "Your Facebook Client Token" }
 
 ![gamebase_app_20_en_240105](https://kr1-api-object-storage.nhncloudservice.com/v1/AUTH_2acdfabf4efe4efc8a04c00b348110c9/cdn_origin/prod_gamebase/ConsoleGuide/App/en/gamebase_app_20_en_240105.png)
 
@@ -315,12 +313,9 @@ Enter {client_id} and {client_secret} issued from PAYCO ID application in the TO
 
 * You need to provide JSON string data at **NHN Cloud Console > Gamebase > App > Authentication Information > Additional Info**.
 * For PAYCO, set **service_code** and **service_name** required by PAYCO SDK.
-
 * Example of entering the additional authentication information for PAYCO
 
-```json
-{ "service_code": "Your Service Code", "service_name": "Your Service Name" }
-```
+        { "service_code": "Your Service Code", "service_name": "Your Service Name" }
 
 ##### iOS
 * [Gamebase > iOS SDK User Guide > Getting Started > IdP Settings > PAYCO](./ios-started/#payco)
@@ -348,9 +343,7 @@ Here, **service_name**, which is the name of an application to be displayed in t
 
 * Example of entering the additional authentication information for NAVER
 
-```json
-{ "service_name": "Your Service Name", "logout_and_delete_token": true }
-```
+        { "service_name": "Your Service Name", "logout_and_delete_token": true }
 
 ##### iOS
 * [Gamebase > iOS SDK User Guide > Getting Started > IdP settings > NAVER](./ios-started/#naver)
@@ -640,6 +633,44 @@ For Steam authentication, you must obtain an **App ID** and **Web API** from Ste
 
 ![gamebase_app_steam_02_en_241025.png](https://kr1-api-object-storage.nhncloudservice.com/v1/AUTH_2acdfabf4efe4efc8a04c00b348110c9/cdn_origin/prod_gamebase/ConsoleGuide/App/en/gamebase_app_steam_02_en_241025.png)
 
+#### 13. Epic Games
+[Epic Games Dev Portal](https://dev.epicgames.com/portal)에서 발급 받은 {Client ID} 및 {Client Secret}을 Gamebase Console에 입력합니다.
+이때, 디플로이 ID와 인증 시 필요한 {scope}를 JSON String 형태로 추가 정보란에 입력해야 합니다.
+
+1. **제품 설정 > 샌드박스** 메뉴에서 디플로이를 생성합니다.
+2. **제품 설정 > 클라이언트** 메뉴에서 클라이언트를 생성합니다.
+3. **제품 설정 > SDK 다운로드 및 크리덴셜** 메뉴에서 **Client ID**, **Client Secret**, **Deployment ID**를 확인합니다.
+
+> [참고]
+>
+> 디플로이 및 클라이언트 생성에 대한 자세한 내용은 다음 문서를 참고하시기 바랍니다.
+> [Game > Gamebase > 스토어 콘솔 가이드 > Epic Games Store 콘솔 가이드](./console-epicgames-guide)
+
+**입력 필드**
+
+- Client ID: {Client ID}
+- Secret Key: {Client Secret}
+- 추가정보: deployment_id, scope (json format)
+
+![에픽 앱 정보](https://kr1-api-object-storage.nhncloudservice.com/v1/AUTH_2acdfabf4efe4efc8a04c00b348110c9/cdn_origin/prod_iap/console_epic/epic_console_app_03_kor.png)
+
+**Reference URL**
+
+- [Epic Games Dev Portal](https://dev.epicgames.com/portal)
+- [Epic Online Services 문서](https://dev.epicgames.com/docs/epic-online-services)
+
+##### Additional Info Settings
+
+* **NHN Cloud Console > Gamebase > App > 인증 정보 > 추가 정보** 항목에 JSON string 형태의 정보를 설정해야 합니다.
+* Epic Games의 경우, **제품 설정 > SDK 다운로드 및 크리덴셜 > EOS SDK 크리덴셜 > 디플로이**에서 확인한 **deployment_id**와 OAuth 인증 시 요청할 권한 범위인 **scope**를 설정해야 합니다.
+* **deployment_id**는 EOS(Epic Online Services) 서비스 환경을 식별하기 위해 반드시 설정해야 합니다.
+* **scope**는 인증 시 사용자의 프로필, 친구 목록, 접속 상태 등의 정보를 획득하기 위해 설정합니다.
+* 인증 시 요청 가능한 scope는 다음 문서에서 확인할 수 있습니다.
+    * https://dev.epicgames.com/docs/web-api-ref/authentication#requesting-an-access-token
+* Epic Games 추가 인증 정보 입력 예제
+
+        { "deployment_id": "Your Deployment ID", "scope": ["basic_profile", "friends_list", "presence"] }
+
 ### GPGS Automatic Login Settings
 
 * Supports the [Automatic sign-in using Google Play Games Services (GPGS)](https://developer.android.com/games/pgs/signin#automatic-sign-in) feature.

diff --git a/en/release-notes-unity.md b/en/release-notes-unity.md
@@ -1,5 +1,15 @@
 ## Game > Gamebase > Release Notes > Unity
 
+### 2.81.0 (2026. 03. 24.)
+[SDK Download](https://static.toastoven.net/toastcloud/sdk_download/gamebase/v2.81.0/GamebaseSDK-Unity.zip)
+
+#### 기능 추가
+* (Windows, macOS) 외부 브라우저 로그인 IDP에 Epicgames가 추가되었습니다.
+
+#### 플랫폼별 변경 사항
+* [Gamebase Android SDK 2.80.0](./release-notes-android/#2800-2026-02-13)
+* [Gamebase iOS SDK 2.80.0](./release-notes-ios/#2800-2026-02-13)
+
 ### 2.80.1 (2026. 03. 10.)
 [SDK Download](https://static.toastoven.net/toastcloud/sdk_download/gamebase/v2.80.1/GamebaseSDK-Unity.zip)
 

diff --git a/en/release-notes-unreal.md b/en/release-notes-unreal.md
@@ -1,5 +1,17 @@
 ## Game > Gamebase > Release Notes > Unreal
 
+### 2.81.0 (2026. 03. 24.)
+[SDK Download](https://static.toastoven.net/toastcloud/sdk_download/gamebase/v2.81.0/GamebaseSDK-Unreal.zip)
+
+#### 기능 개선/변경
+
+* 내부 로직을 개선했습니다.
+
+#### 플랫폼별 변경 사항
+
+* [Gamebase Android SDK 2.80.0](./release-notes-android/#2800-2026-02-13)
+* [Gamebase iOS SDK 2.80.0](./release-notes-ios/#2800-2026-02-13)
+
 ### 2.80.0 (2026. 02. 13.)
 [SDK Download](https://static.toastoven.net/toastcloud/sdk_download/gamebase/v2.80.0/GamebaseSDK-Unreal.zip)
 

diff --git a/en/unity-authentication.md b/en/unity-authentication.md
@@ -358,7 +358,7 @@ This game interface allows authentication to be made with SDK provided by IdP, b
 
 | Keyname | Usage | Value Type |
 | ---------------------------------------- | ------------------------------------ | ------------------------------ |
-| GamebaseAuthProviderCredential.PROVIDER_NAME | Set IdP type                           | GamebaseAuthProvider.GOOGLE<br>GamebaseAuthProvider.GPGS_V2<br>GamebaseAuthProvider.GAMECENTER<br> GamebaseAuthProvider.FACEBOOK<br>GamebaseAuthProvider.NAVER<br>GamebaseAuthProvider.TWITTER<br>GamebaseAuthProvider.LINE<br>GamebaseAuthProvider.HANGAME<br>GamebaseAuthProvider.APPLEID<br>GamebaseAuthProvider.WEIBO<br>GamebaseAuthProvider.KAKAOGAME<br>GamebaseAuthProvider.PAYCO<br>GamebaseAuthProvider.STEAM |
+| GamebaseAuthProviderCredential.PROVIDER_NAME | Set IdP type                           | GamebaseAuthProvider.GOOGLE<br>GamebaseAuthProvider.GPGS_V2<br>GamebaseAuthProvider.GAMECENTER<br> GamebaseAuthProvider.FACEBOOK<br>GamebaseAuthProvider.NAVER<br>GamebaseAuthProvider.TWITTER<br>GamebaseAuthProvider.LINE<br>GamebaseAuthProvider.HANGAME<br>GamebaseAuthProvider.APPLEID<br>GamebaseAuthProvider.WEIBO<br>GamebaseAuthProvider.KAKAOGAME<br>GamebaseAuthProvider.PAYCO<br>GamebaseAuthProvider.STEAM<br>GamebaseAuthProvider.EPICGAMES |
 | GamebaseAuthProviderCredential.ACCESS_TOKEN | Set authentication information (access token) received after login IdP.<br/>Not applied for Google authentication. |                                |
 | GamebaseAuthProviderCredential.AUTHORIZATION_CODE | Enter One Time Authorization Code (OTAC) which can be obtained after Google login. |                                          |
 | GamebaseAuthProviderCredential.GAMEBASE_ACCESS_TOKEN | Used when logging in with Gamebase Access Token instead of IdP authentication information |  |
@@ -637,7 +637,7 @@ This game interface allows authentication to be made with SDK provided by IdP, b
 
 | keyname | Usage | Value Type |
 | ---------------------------------------- | ------------------------------------ | ------------------------------ |
-| GamebaseAuthProviderCredential.PROVIDER_NAME | Set IdP type                           | google, gpgs_v2, facebook, payco, iosgamecenter, naver, twitter, line, appleid, steam |
+| GamebaseAuthProviderCredential.PROVIDER_NAME | Set IdP type                           | google, gpgs_v2, facebook, payco, iosgamecenter, naver, twitter, line, appleid, steam, epicgames |
 | GamebaseAuthProviderCredential.ACCESS_TOKEN | Set authentication information (access token) received after login IdP |                                |
 | GamebaseAuthProviderCredential.AUTHORIZATION_CODE | Enter One Time Authorization Code (OTAC) which can be obtained after Google login. |                                          |
 | GamebaseAuthProviderCredential.SHOW_LOADING_ANIMATION | Display the loading animation until the end of the API call<br>**Only for Android** | **bool**<br>**default**: true |

diff --git a/en/upgrade-guide.md b/en/upgrade-guide.md
@@ -4,7 +4,7 @@
 
 ### Unity
 
-* Auth.AuthToken의 extraParams 타입이 Dictionary<string, string>에서 Dictionary<string, object>로 변경되었습니다.
+* Auth.AuthToken의 extraParams 타입이 Dictionary&lt;string, string&gt;에서 Dictionary&lt;string, object&gt;로 변경되었습니다.
 
 ## 2.80.0
 

diff --git a/ja/oper-app.md b/ja/oper-app.md
@@ -198,9 +198,7 @@ Facebookの開発サイトに登録したアプリの{アプリID}と{アプリ
 * Facebookの場合、 OAuth認証試行時、Facebookにリクエストする権限情報である**facebook_permission**と**facebook_client_token**を設定する必要があります。
 * Facebook追加認証情報の入力例
 
-```json
-{ "facebook_permission": ["public_profile", "email"], "facebook_client_token": "Your Facebook Client Token" }
-```
+        { "facebook_permission": ["public_profile", "email"], "facebook_client_token": "Your Facebook Client Token" }
 
 ![gamebase_app_20](https://kr1-api-object-storage.nhncloudservice.com/v1/AUTH_2acdfabf4efe4efc8a04c00b348110c9/cdn_origin/prod_gamebase/ConsoleGuide/App/jp/gamebase_app_20_ja_240105.png)
 
@@ -314,12 +312,9 @@ PAYCO Client IDを申請して発行された{client_id}及び{client_secret}を
 
 * **NHN Cloud Console > Gamebase > App > 認証情報 > 追加情報**項目にJSON string形式の情報を設定する必要があります。
 * PAYCOの場合、PAYCO SDKで要求する**service_code**と**service_name**を設定する必要があります。
-
 * PAYCO追加認証情報の入力例
 
-```json
-{ "service_code": "Your Service Code", "service_name": "Your Service Name" }
-```
+        { "service_code": "Your Service Code", "service_name": "Your Service Name" }
 
 ##### iOS
 * [Gamebase > iOS SDK使用ガイド > 始める > IdP settings > PAYCO](./ios-started/#payco)
@@ -346,9 +341,7 @@ NAVER Developersサイトで申請して発行された{client_id}および{clie
 
 * NAVER追加認証情報の入力例
 
-```json
-{ "service_name": "Your Service Name", "logout_and_delete_token": true }
-```
+        { "service_name": "Your Service Name", "logout_and_delete_token": true }
 
 ##### iOS
 * [Gamebase > iOS SDK使用ガイド > 始める > IdP settings > NAVER](./ios-started/#NAVER)
@@ -631,6 +624,44 @@ Steam認証のためにSteamworksから**App ID**と**Web API**を発行し、Ga
 
 ![gamebase_app_steam_02_en_241025.png](https://kr1-api-object-storage.nhncloudservice.com/v1/AUTH_2acdfabf4efe4efc8a04c00b348110c9/cdn_origin/prod_gamebase/ConsoleGuide/App/en/gamebase_app_steam_02_en_241025.png)
 
+#### 13. Epic Games
+[Epic Games Dev Portal](https://dev.epicgames.com/portal)에서 발급 받은 {Client ID} 및 {Client Secret}을 Gamebase Console에 입력합니다.
+이때, 디플로이 ID와 인증 시 필요한 {scope}를 JSON String 형태로 추가 정보란에 입력해야 합니다.
+
+1. **제품 설정 > 샌드박스** 메뉴에서 디플로이를 생성합니다.
+2. **제품 설정 > 클라이언트** 메뉴에서 클라이언트를 생성합니다.
+3. **제품 설정 > SDK 다운로드 및 크리덴셜** 메뉴에서 **Client ID**, **Client Secret**, **Deployment ID**를 확인합니다.
+
+> [참고]
+>
+> 디플로이 및 클라이언트 생성에 대한 자세한 내용은 다음 문서를 참고하시기 바랍니다.
+> [Game > Gamebase > 스토어 콘솔 가이드 > Epic Games Store 콘솔 가이드](./console-epicgames-guide)
+
+**입력 필드**
+
+- Client ID: {Client ID}
+- Secret Key: {Client Secret}
+- 추가정보: deployment_id, scope (json format)
+
+![에픽 앱 정보](https://kr1-api-object-storage.nhncloudservice.com/v1/AUTH_2acdfabf4efe4efc8a04c00b348110c9/cdn_origin/prod_iap/console_epic/epic_console_app_03_kor.png)
+
+**Reference URL**
+
+- [Epic Games Dev Portal](https://dev.epicgames.com/portal)
+- [Epic Online Services 문서](https://dev.epicgames.com/docs/epic-online-services)
+
+##### Additional Info Settings
+
+* **NHN Cloud Console > Gamebase > App > 인증 정보 > 추가 정보** 항목에 JSON string 형태의 정보를 설정해야 합니다.
+* Epic Games의 경우, **제품 설정 > SDK 다운로드 및 크리덴셜 > EOS SDK 크리덴셜 > 디플로이**에서 확인한 **deployment_id**와 OAuth 인증 시 요청할 권한 범위인 **scope**를 설정해야 합니다.
+* **deployment_id**는 EOS(Epic Online Services) 서비스 환경을 식별하기 위해 반드시 설정해야 합니다.
+* **scope**는 인증 시 사용자의 프로필, 친구 목록, 접속 상태 등의 정보를 획득하기 위해 설정합니다.
+* 인증 시 요청 가능한 scope는 다음 문서에서 확인할 수 있습니다.
+    * https://dev.epicgames.com/docs/web-api-ref/authentication#requesting-an-access-token
+* Epic Games 추가 인증 정보 입력 예제
+
+        { "deployment_id": "Your Deployment ID", "scope": ["basic_profile", "friends_list", "presence"] }
+
 ### GPGS Automatic Login Settings
 
 * [GPGS(Google Play Games Services)を利用した自動ログイン(Automatic sign-in)](https://developer.android.com/games/pgs/signin#automatic-sign-in)機能をサポートします。

diff --git a/ja/release-notes-unity.md b/ja/release-notes-unity.md
@@ -1,5 +1,15 @@
 ## Game > Gamebase > リリースノート > Unity
 
+### 2.81.0 (2026. 03. 24.)
+[SDK Download](https://static.toastoven.net/toastcloud/sdk_download/gamebase/v2.81.0/GamebaseSDK-Unity.zip)
+
+#### 기능 추가
+* (Windows, macOS) 외부 브라우저 로그인 IDP에 Epicgames가 추가되었습니다.
+
+#### 플랫폼별 변경 사항
+* [Gamebase Android SDK 2.80.0](./release-notes-android/#2800-2026-02-13)
+* [Gamebase iOS SDK 2.80.0](./release-notes-ios/#2800-2026-02-13)
+
 ### 2.80.1 (2026. 03. 10.)
 [SDK Download](https://static.toastoven.net/toastcloud/sdk_download/gamebase/v2.80.1/GamebaseSDK-Unity.zip)
 

diff --git a/ja/release-notes-unreal.md b/ja/release-notes-unreal.md
@@ -1,5 +1,17 @@
 ## Game > Gamebase > リリースノート > Unreal
 
+### 2.81.0 (2026. 03. 24.)
+[SDK Download](https://static.toastoven.net/toastcloud/sdk_download/gamebase/v2.81.0/GamebaseSDK-Unreal.zip)
+
+#### 기능 개선/변경
+
+* 내부 로직을 개선했습니다.
+
+#### 플랫폼별 변경 사항
+
+* [Gamebase Android SDK 2.80.0](./release-notes-android/#2800-2026-02-13)
+* [Gamebase iOS SDK 2.80.0](./release-notes-ios/#2800-2026-02-13)
+
 ### 2.80.0 (2026. 02. 13.)
 [SDK Download](https://static.toastoven.net/toastcloud/sdk_download/gamebase/v2.80.0/GamebaseSDK-Unreal.zip)
 

diff --git a/ja/unity-authentication.md b/ja/unity-authentication.md
@@ -358,7 +358,7 @@ IdPが提供するSDKを使ってゲームで直接認証した後、発行さ
 
 | keyname | a use | 値の種類 |
 | ---------------------------------------- | ------------------------------------ | ------------------------------ |
-| GamebaseAuthProviderCredential.PROVIDER_NAME | IdPタイプの設定                          | GamebaseAuthProvider.GOOGLE<br>GamebaseAuthProvider.GPGS_V2<br>GamebaseAuthProvider.GAMECENTER<br> GamebaseAuthProvider.FACEBOOK<br>GamebaseAuthProvider.NAVER<br>GamebaseAuthProvider.TWITTER<br>GamebaseAuthProvider.LINE<br>GamebaseAuthProvider.HANGAME<br>GamebaseAuthProvider.APPLEID<br>GamebaseAuthProvider.WEIBO<br>GamebaseAuthProvider.KAKAOGAME<br>GamebaseAuthProvider.PAYCO<br>GamebaseAuthProvider.STEAM |
+| GamebaseAuthProviderCredential.PROVIDER_NAME | IdPタイプの設定                          | GamebaseAuthProvider.GOOGLE<br>GamebaseAuthProvider.GPGS_V2<br>GamebaseAuthProvider.GAMECENTER<br> GamebaseAuthProvider.FACEBOOK<br>GamebaseAuthProvider.NAVER<br>GamebaseAuthProvider.TWITTER<br>GamebaseAuthProvider.LINE<br>GamebaseAuthProvider.HANGAME<br>GamebaseAuthProvider.APPLEID<br>GamebaseAuthProvider.WEIBO<br>GamebaseAuthProvider.KAKAOGAME<br>GamebaseAuthProvider.PAYCO<br>GamebaseAuthProvider.STEAM<br>GamebaseAuthProvider.EPICGAMES |
 | GamebaseAuthProviderCredential.ACCESS_TOKEN | IdPログイン後に取得した認証情報(アクセストークン)の設定<br/>Google認証の場合は使用しない |                                |
 | GamebaseAuthProviderCredential.AUTHORIZATION_CODE | Googleログイン後に取得できるOTAC(one time authorization code)の入力 |                                          |
 | GamebaseAuthProviderCredential.GAMEBASE_ACCESS_TOKEN | IdP認証情報ではなくGamebase Access Tokenでログインを行いたい場合に使用 |  |
@@ -637,7 +637,7 @@ public void AddMapping(string providerName)
 
 | keyname | a use | 値の種類 |
 | ---------------------------------------- | ------------------------------------ | ------------------------------ |
-| GamebaseAuthProviderCredential.PROVIDER_NAME | IdPタイプの設定                          | google, gpgs_v2, facebook, payco, iosgamecenter, naver, twitter, line, appleid, steam |
+| GamebaseAuthProviderCredential.PROVIDER_NAME | IdPタイプの設定                          | google, gpgs_v2, facebook, payco, iosgamecenter, naver, twitter, line, appleid, steam, epicgames |
 | GamebaseAuthProviderCredential.ACCESS_TOKEN | IdPログイン後に取得した認証情報(アクセストークン)設定<br/>Google認証の場合は使用しない |                                |
 | GamebaseAuthProviderCredential.AUTHORIZATION_CODE | Googleログイン後に取得できるOTAC(one time authorization code)を入力 |                                          |
 | GamebaseAuthProviderCredential.SHOW_LOADING_ANIMATION | API呼び出しが終了するまでローディングアニメーションを表示<br>**Androidのみ** | **bool**<br>**default**: true |

diff --git a/ja/upgrade-guide.md b/ja/upgrade-guide.md
@@ -4,7 +4,7 @@
 
 ### Unity
 
-* Auth.AuthToken의 extraParams 타입이 Dictionary<string, string>에서 Dictionary<string, object>로 변경되었습니다.
+* Auth.AuthToken의 extraParams 타입이 Dictionary&lt;string, string&gt;에서 Dictionary&lt;string, object&gt;로 변경되었습니다.
 
 ## 2.80.0