What you want to ask is how to download the built-in menu of clash royale International Service? Clash royale international service built-in menu download method:

1. Open the device's AppStore (for example, App Store or GooglePlay Store).

2. Enter "ClashRoyale" in the search box, and then click Search.

3. In the search results, find the official clash royale application and click it.

4. Confirm that the application is developed by Supercell, check the scores and comments of the application and check its reliability.

5. Click Download/Install and wait for the application to download and install. ClashRoyale is a multiplayer online strategy game developed by Supercell. It combines the elements of tower defense game and card battle. Players need to fight against other players, compete for each other's crown and protect their own king's tower.