A skybox is a small room at a sports stadium or arena where people can watch the game from above the regular seats.
Skyboxes are usually for rich or important people and are very fancy and comfortable.
Examples:
The skybox at the stadium has a great view of the game.
We watched the game from the skybox.
The skybox is high up in the stadium.
I wish I could watch the game from a skybox!
In the skybox, you can see the whole game from the best seat in the house.
The skybox is the best place to watch the game.