Skyline is an open-source Nintendo Switch emulator for Android that you can use to emulate the Nintendo console on your smartphone. Its name comes from the Nintendo Switch software code name "Horizon", for which "Skyline" is a synonym.
Among the formats that the emulator is capable of reading are NSP, XCI, NRO, NSO and NCA. If you don't know the file format of the game you want to play, they are sorted by "all" in the main tab, so that you can see all those on your device. If a game still doesn't appear, then in the settings, you can choose which folder you store the games in, and that is where the emulator will read them from.
After telling the app where your game can be found and entering the production keys, you'll be able to run it. Some games may perform better than others, and others may present some problems when emulated. The game controls appear on the screen.
The Skyline emulator has many options: for example, you can force the "dock" mode so that the game performs at maximum power, as it would if you had the Nintendo Switch in the dock. You can also edit the graphics to improve its performance.
So if you want to emulate your Nintendo Switch games on Android, downloading the Skyline APK is an excellent way to do this.