As Sonic absorbs energy to free his friends, he becomes infected with "Cyber-Corruption." This puts him on a ticking clock, as the digital glitching begins to physically break down his body. The Ending
The game ends with the Starfall Islands finally at peace, Dr. Eggman mourning/recovering his AI daughter, and Sonic’s crew heading home with a renewed sense of purpose. Sonic Frontiers [01004AD014BF0800][v65536][US]....
If you play the "Final Horizon" update, the story changes significantly, allowing Tails, Amy, and Knuckles to become playable and offering a new "true" final boss fight where Sage’s fate is more optimistic. As Sonic absorbs energy to free his friends,
Through "Memory Tokens," Sonic learns the tragic history of The Ancients , an alien race that fled to Earth after their home world was destroyed by a cosmic entity known as The End . They used the Chaos Emeralds to power their civilization but were eventually wiped out. If you play the "Final Horizon" update, the
A mysterious AI girl named Sage opposes Sonic. She was created by Dr. Eggman (who is also trapped in Cyberspace) to protect the islands' secrets. Over the course of the game, Sage observes Sonic’s bond with his friends and begins to develop her own sense of empathy and "family" with Eggman.
Sonic, Tails, and Amy travel to the mysterious in search of the Chaos Emeralds. Upon arrival, a wormhole sucks them in, separating the group. Sonic finds himself alone in Cyberspace —a digital realm constructed from his memories—but manages to escape to the physical islands. However, his friends remain trapped as "digital ghosts," existing in a glitchy state between worlds. Key Story Beats