I've spent countless hours diving into fan theories about 'October Theory,' and one that really stands out is the idea that the protagonist's journey was all a simulation. Fans point to subtle glitches in the background scenes and the way certain characters repeat dialogue as evidence. The theory suggests the entire story is a test of the protagonist's morality, with the ending being their 'final score.' Some even believe the credits sequence hides clues in the form of binary code or reversed audio. It's wild how much detail people uncover when they obsess over a story.
Another popular take is that the protagonist was dead the whole time, and the events represent their purgatory. This aligns with the recurring theme of unresolved guilt in the narrative. The final scene, where they walk into the light, could symbolize acceptance and moving on. Fans of this theory often cite the director's love for ambiguous endings as further proof.