What game pays the most real money?

I'm curious to know, which game out there in the vast world of digital entertainment pays out the highest amount of real money? Are there any specific platforms or genres that tend to offer more lucrative rewards for players? Are there any strategies or skills that players can hone in on to increase their chances of earning substantial sums? I'm particularly interested in hearing from those who have had success in monetizing their gameplay, and how they've managed to do so.