What is metagame?

Simple explanation with examples from Hearthstone and DOTA 2.

[MrSugaru]

Hey dude, a little of subject.
Have you ever played RPG Board games? I'm in process of creating one myself.
I'm sure with your expirience with these sort of games.
Have you any advice?
The game play its self may be slightly different but structure and players abilities are similar.Can you offer me any advice? On creating a game or what makes a game good?
What you look for in a game that keeps you hooked?Many thanks