# loadCategories(completionHandler:) Loads the list of leaderboard categories along with their corresponding localized titles. ``` class func loadCategories(completionHandler: (@Sendable ([String]?, [String]?, (any Error)?) -> Void)? = nil) ``` ## Parameters `completionHandler` A block to call after retrieving the categories from the server. The block receives the following parameters: - *categories*: An array of `NSString` objects that provides the categories to your game. If an error occurs, this value may be non-`nil`. In this case, the array holds whatever data GameKit downloads before the error occurs. - *titles*: An array of `NSString` objects that provides localized titles for each category. If an error occurs, this value may be non-`nil`. In this case, the array holds whatever data GameKit downloads before the error occurs. - *error*: If an error occurs, this error object describes the error. If the operation completes successfully, the value is `nil`. ## Discussion You use this class method to retrieve the category identifiers and titles you configure for your leaderboards in App Store Connect. To create a leaderboard query that targets a particular category, set the [`category`](/documentation/GameKit/GKLeaderboard/category) property to one of the strings that this method returns. When you call this method, it creates a new background task to handle the request. The method then returns control to your game. When the task is complete, GameKit calls your completion handler on the main thread. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)