Answer:
A morbidly-named body of water
It's a game played by serious people that takes place on a global scale.
You heard me before, yet you hear me again, then I die. Until you call me again.
Halo of water, tongue of wood. Skin of stone, long I've stood. My fingers short reach to the sky. Inside my heart men live and die.
An iron horse with a flaxen tail. The faster the horse runs, the shorter his tail becomes.
I will disappear every time you say my name.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?