[PC] [2000s-early 2010s] RPG Maker Horror game where the protagonist becomes self-aware

Platform: PC

Genre: Horror RPG

Estimated year of release:
I watched a letsplay of it around 2014, before 2017 at the latest, could have been much earlier

Art style: 8-bit

Notable characters: Protag was a young girl, she had a few friends, I remember zombies and a giant worm enemy.

Other details:
I think markiplier was the one that played it, though I could be wrong.
What i remember is that it started out in a room with her friends (A bar, resturaunt?) might have been a school. the protag ends up in some kind of labyrinth or dungeon, she finds her friends as one of them cuts off their head, the other their heart, for her to use as keys in a puzzle.
She ends up in a post-apocolyptic city, there were zombies. one of the bosses was a giant dune worm.
What i remember post is the ending, She starts talking to someone from outside the game, its creator or something, and realizes that the world she's in is fake. Her last wish is to see her dead friends again, they appear to her on a beach, she asks why they're floating and they say its because they were never given walking animations. The credits roll as she cries on a sunset.

I have been looking for this for years, please help