According to FIBA, 3x3 basketball is the most preferred format of recreational basketball played around the world. It is also increasingly becoming a popular form of competitive basketball as new tournaments are launched every year.

Each time you compete in a FIBA endorsed event you earn ranking points. FIBA has created a global 3x3basketball community powered by an individual world ranking system

Even if you don't have great skills, you can still play, anyone can, from  beginners to experts, all ages and genders, mixed teams as well.

3x3 Is simple to play and organize.

It's fun., according to FIBA, 

3x3 is a fast paced and fiercely competitive game that can showcase skill and develop urban stars. At the same time, it’s a game for both genders that can be enjoyed in a recreational setting by all skill levels. This makes recreational and competitive events fun and entertaining to both players and fans, reaching out to those who have traditionally not been a part of the basketball community.