It was recently reported that the platformer's total launch week sales in the UK were over 20 percent higher than Ratchet and Clank: Rift Apart's.
Sega is working on a direct sequel to the 2022 3D platformer Sonic Frontiers, it's been claimed, though it may not necessarily be called Sonic Frontiers 2.
Sega of America boss Shuji Utsumi spoke about the company building off the success of recent Sonic the Hedgehog titles.
The final update for Sonic Frontiers brings with it new story content, as well as new playable characters in the form of Amy, Knuckles and Tails.
Check out the final trailer before the last update for Sonic Frontiers hits your platform of choice later today.
It teases the stories of Knuckles, Amy Rose and Tails while Sage talks of an outcome that she previously hadn't unconsidered.
Future 2D Sonic games may not go back to the pixel art style we last saw with Sonic Mania Plus, according to the producer of Sonic Superstars.
The Final Horizon update for Sonic Frontiers will be available for free on September 28, and will bring with it a new story and new playable characters.
The new update revamps the Starfall Islands with various decorations and adds new challenges, Koco to collect, and more.
A recent press conference for Sega and Rovio reveals that the 3D platformer sold 300,000 more units after its last milestone.
The open world platformer is continuing to sell at a decent rate, having hit 3 million units a little over a month ago.
Race or fight to beat the clock in new Challenge Modes, listen to songs while exploring and capture stylish photos of Sonic in the update.
The 3D platformer, which uses new open zone mechanics, is available for Xbox One, Xbox Series X/S, PS4, PS5, PC, and Nintendo Switch.
Cyber Space Challenge and Battle Rush offer Time Attack and combat challenges, while Jukebox has 53 songs to listen to while exploring.
The first free content update adds the Juke Box, Photo Mode and new Challenge Modes. Two more updates are coming later this year.
The seasonal sale offers huge discounts on thousands of PC titles for the next week, including Sonic Frontiers, Gotham Knights and more.
"We will continue to sell over the long term based on sales strategies such as pricing, promotions, and the development of further DLC," Sega says.
Despite the success of the latest 3D Sonic in the form of Sonic Frontiers, we might also get more 2D Sonic games down the line.
Sega's most recent earnings report indicates that Sonic Frontiers has been quite a successful release and continues to enjoy sustained sales.
Sonic Team's Morio Kishimoto says he is thinking of making the next Sonic game more like Sonic Adventure.
