Unity3D + C#, can I write cross-platform games?

Question

C++ / C#

Is it possible to create cross-platform games on Unity3D + C#, or what else do you need to know for this?

Answer 1

Yes, you can.
Actually, this is one of the main reasons why they choose Unity3D.
With minor edits, you can release the same game on any platform: iOS, Android, Windows, PS4, etc.