Summary:
- The Sonic the Hedgehog video game series has sold over 1.5 billion copies worldwide, making it one of the best-selling video game franchises of all time.
- The series has been around for over 30 years, with the first Sonic game released in 1991 for the Sega Genesis console.
- Sonic has appeared in numerous games, TV shows, and movies, and has become an iconic character in the video game industry.