32 countries are divided into 4 divisions: Trial, Junior, Senior, and Masters. The goal of every country marble, from Trial to Senior Division, is to ascend to the esteemed Masters Division, where victory means becoming the league champions. However, once in the Masters Division, the focus shifts to maintaining a high rank to avoid relegation.

Here are the detailed rules:

There are 4 divisions: Trial, Junior, Senior, and Masters.
Each division comprises 8 countries.
The two lowest-ranking countries in the Trial Division are replaced with fan choices.
The top two countries in the Trial Division are promoted to the Junior Division.
The bottom two countries in the Junior Division are demoted to the Trial Division, while the top two are promoted to the Senior Division.
The bottom two countries in the Senior Division are demoted to the Junior Division, while the top two are promoted to the Masters Division.
The bottom two countries in the Masters Division are demoted to the Senior Division.
The top country in the Masters Division is crowned league champion.