This is a very broad question and has no real answer. Many many people play the bass guitar, and there is no way of checking how many.
20,000,000 people play cricket worldwide today.
20.
Not me, sooo...
200000
Yes, many people around the world play Guitar Hero. It has an international following.
lotsa people worldwide
about 40,000,000 people
23,000
Millions
less than 10,000 people
Over 30 million people worldwide.