Locked phases no longer display their preview images or subtitles to avoid spoilers.

An extra page has been added into the Achievements book to showcase Phase 5, 6 and 7 challenges, only accessible after beating Phase 4.

Ability to do BIG SHOTs added to Phase 2, as well as some changed attacks.

Flowey's attacks are more aggressive in Phase 1. He also shakes now when getting close to the end of his dialogue.

Mutant Flowey's (Phase 4 form) HP has been nerfed significantly. Him having four billion HP was unnecessary, now it's just one million.

New "sub-phases" have been added to Phase 4 to keep track of progress and to add more variety to the fight.

Transitioning to Phase 5 no longer requires going back to the menu, allowing players to complete all 7 phases in a single run.

It is no longer possible to progress the fight by using ITEM, ACT and MERCY options.

Attempting to FIGHT or ACT on dead Flowey in Phase 1 gives off new status messages.

New secret route added to one of the phases.

Phase 3 can either end in cutting the strings or FIGHTing. Whichever requirement is met first will trigger its respective ending.

Ability to change your name has been added.

Phase 7 will have checkpoints and a more aggressive battle.

HALL OF FAME added in the Achievements menu, only accessible after beating Phase 4.

JOURNAL added, only accessible after beating Phase 4.

Credits will no longer display Phase 5, 6 and 7 OST names if they haven't been completed prior.

Teaser at the end of the credits does not display when accessing the credits from the menu.

Some dialogue has been slightly altered.

Some visuals were changed in Phases 2, 3 and 4.