GTA V was released back in September 2013. In that time, it has sold over 90 million copies, making its production company over US$6 billion in sales—more than any commercial entertainment product ever.
https://www.notebookcheck.net/GTA-V-has-made-over-US-6-billion-more-than-any-entertainment-product-ever.296706.0.html
It will soon be replaced by some mobile game like Clash of Clans or Candy Crush..If I'm not mistaken CoC earned close to 6B so far and keeps bringing in 50+ milion each month