While players do not receive direct payment for playing the game, they can earn in-game currency and rewards by achieving high scores and completing various challenges. Typically, you don't earn real money by playing Subway Surfers.
It is illegal, dangerous, and has already claimed hundreds of lives. Media outlets call it a "sport," but actually, that is as irresponsible as participating in it. Train surfing, also known as tram surfing or subway surfing, is the act of riding on the exterior parts of a moving train.