Sonic Frontiers: How to unlock the true final boss & ending

Spoilers, obviously Surprisingly, there’s more to Sonic Frontiers than meets the eye when it comes to its ending. There’s actually a

How to reach the true final ending in Sonic Frontiers

What's Wrong with Sonic Frontiers: The Final Horizon?, by Travis Vuong

How to Beat The End in Sonic Frontiers - Prima Games

Final Boss and Ending - Sonic Frontiers Guide - IGN

Final Boss and Ending - Sonic Frontiers Guide - IGN

Final Boss and Ending - Sonic Frontiers Guide - IGN

Ouranos Island - Sonic Frontiers Guide - IGN

The End, Sonic Wiki Zone

Sonic Frontiers: How to unlock the true final boss & ending

Looks like the Final Horizon content is an option you're presented with right before the Supreme fight. : r/SonicFrontiers

Final Boss and Ending - Sonic Frontiers Guide - IGN

Sonic Frontiers Reaches The Final Horizon With Update #3 On September 28th - Games - Sonic Stadium

The End (Sonic Frontiers) (true form) by Hexsmasher on DeviantArt