What game requires the most mechanical skill?

What game requires the most mechanical skill? As fortnite is the most (mechanically) skilled/competitive game, with open tourneys and a lot of money, this attracts all try harders from every game and particularly experienced players who are now 20+years old.

As fortnite is the most (mechanically) skilled/competitive game, with open tourneys and a lot of money, this attracts all try harders from every game and particularly experienced players who are now 20+years old.