: By default, Nintendo only offers "Basic White" and "Basic Black" themes in System Settings > Themes .
Do not install it. Delete the file immediately and run a virus scan (Malwarebytes or your phone’s built-in protector).
– that’s a scam. No launcher can magically play Switch games on Android without an emulator like Yuzu or Ryujinx (and those require game ROMs, which are illegal unless you dump them from your own cartridges).