Satta king is a bidding based game where you can bid and guess the winning number to become satta king and earn huge money.
Some say it is a gambling game, some say it is a luck based game and some say it is a secret calculation based game.
I would say it has all these elements. It is also known as Kuber ka matka, because if you win it will get you huge money.
It can also kill your money if you loose, so be careful while spending your hard earned money.