How to reach the true final ending in Sonic Frontiers

Interestingly, Sonic Frontiers contains a true, secret ending that players can access through a rather simple method.

The End, Sonic Wiki Zone

Sonic Frontiers' has its weird, bad hooks in me

Endings - Sonic Frontiers Guide - IGN

Endings - Sonic Frontiers Guide - IGN

Frontier Hopes (if Sonic is the ONLY playable character) : r

Sonic Frontiers - How to Unlock the The End True Final Boss Fight

How to Start Sonic Frontiers Final Horizon? Sonic Frontiers

Sonic Frontiers - Sage Lives True Ending [HD 1080P]

Stream Sonic Frontiers OST - I'm With You (Final Boss Theme) by

Sonic Frontiers' Ending, Explained — Story Breakdown