What part of the Stack Overflow answer didn't work? What did you try that didn't work?. If you look at the SKScene class documentation in Xcode, there's an init function to create a scene in code without using a .sks file.

The app file you are downloading from the App Store is compressed. When you install the app on your device, the app file expands. That's why the app file size on your device is larger than the size on the App Store page.

Place your project under version control. In Xcode choose Source Control > New Git Repositories to place your project under version control. Press Cmd-2 to access Xcode's source control navigator. From the source control navigator you can create branches for your project. If you need a more detailed explanation on Xcode's version control features, take a look at the book at the following page: swiftdevjournal.com/version-control-book/ There are also alternatives to using Xcode for working with git. The following page has a list of git GUI clients: git-scm.com/downloads/guis

There's an Add (+) button at the bottom of your screenshot. Click the Add button to add a new document type.

Do you have this information for reference? No, I do not. That is why I said in my first reply that I was guessing. Read the comment to my earlier answer from an Apple engineer. You must update to Xcode 13 to test your app on the iPad Mini 6.

My guess is Xcode 11.4 does not support iOS devices introduced after Xcode 11.4's release, which was March 24, 2020. The iPad Mini 6 came out in 2021. Do you have another iOS device introduced after March 2020 to test my guess? You most likely need to update to a newer Xcode version to install your app on the iPad Mini 6.