It's amazing what one small comment, reference or item can do to send a fan's imagination into pandemonium. For as long as video games have been a source of entertainment, fans and players have looked for details left behind by developers that point to a bigger picture going on behind the scenes. Intentional to begin with or not, some of these speculations and theories have even found a way of becoming fact.
After a fan theory surrounding the character went viral, Blizzard Entertainment confirmed via a fan letter that Symmetra from Overwatch was indeed autistic, it was revealed that Michael Jackson did indeed help produce some of the music for Sonic the Hedgehog 3 and James Sunderland's wife really was buried in the boot of his Silent Hill 2 car.
As a result, when it comes to a mind-blowing fan theory, there are times when the actual imagination and piecing together can be more exciting than the title itself.
From entire apocalypses hidden off screen, to hidden family tragedies that only eagle eyed players could have uncovered, here are ten of the best video game fan theories that literally change everything about their respective titles.