A video game which has the most impressive, extraordinary, or advanced technical graphics. The Graphics King does not needs to appeal to the personal artistic tastes of a majority, it's a purely tech-driven position.
The question "what game is the graphics king?" is similar to "what's the fastest car?", not "what's the best car?". The second question involves too many variables not related to the speed of a car.
Graphics King =/= Art Direction King
- Crysis is the Graphics King.
- I find Super Meat Boy artistically pleasing. It's the most beautiful game I've ever played, but it's not the Graphics King.
- Crysis 2 on console is the console graphics king, but it's not the Graphics King. Crysis 1 with mods is superior.