The game would be written in C++ using the AGK game library for display, sound, input and multiplayer. AGK uses OpenGL for display.
I want/need to learn mobile/tablet programming is main reason for using AGK just like I used VB6 to make RPGWO, originally, to learn a new language for career reasons.
But ultimately, you never see, in commercial games, in the title screen(s), "Made with Unity GDK" or whatever. In other words, the game, not the method dictates.