What is the most cross-platform engine to choose?

Question

Programming

Hello everyone, I don’t know which engine to choose, one I mastered is the crown of SDK, I would like the most cross-platform, except for the 3d unit and anriala, there are others.

Answer 1

>> the most cross-platform
Sounds funny.
And if I were you, I would first master the Russian language.

Answer 2

libgdx - Both cross-platform and 2D and you can call yourself a programmer.