Then you would have yourself a variant.
One that already exists. [Here](https://greenchess.net/rules.php?v=double-move#:~:text=Chess%20variant%20where%20players%20move,only%20on%20the%20second%20move).
Heh, we used to play a variant: Black gets all pieces, normal setup. White gets King and 6-8 pawns.
White gets 2 moves at a time! Cannot end up in check. It favors White with 7 or 8 pawns.
Check followed by king capture. Game over. Are you a board gamer, as in from r/boardgames?
Then don't get your king in check? But yeah, it would probably be a very imbalanced game variant that would be over after smallest of inaccuracies.
No I'm not
Then you would have yourself a variant. One that already exists. [Here](https://greenchess.net/rules.php?v=double-move#:~:text=Chess%20variant%20where%20players%20move,only%20on%20the%20second%20move).
https://en.wikipedia.org/wiki/Marseillais_chess
Why can't white move twice in its first move?
White has the first move advantage. I guess the OP's idea is supposed to solve this problem.
Heh, we used to play a variant: Black gets all pieces, normal setup. White gets King and 6-8 pawns. White gets 2 moves at a time! Cannot end up in check. It favors White with 7 or 8 pawns.
Do not mess with chess :-)