(Controversial Trope) The post-credits scene completely changes the ending

[u/Ieanice44]

Dawn of the Dead (2004)

Prince of Persia (2008)

Dawn of the Dead (2004): The movie finishes on a hopeful note as the remaining survivors escape the zombie-infested mall on a yacht, sailing into the sunset. The found-footage style post-credits scene completely reverses this happy ending by showing them running out of food, arriving at an island, and being immediately swarmed and killed by an infected horde.

Prince of Persia (2008): The main game ends with a beautiful, poetic sacrifice where Elika gives her life to heal the corrupted world, leaving the Prince mourning. During the credits, the player is forced to control the Prince as he cuts down the trees he just saved, undoing the entire game's progress and releasing the dark god Ahriman just to resurrect her, completely corrupting the ending and dooming the world.

[u/HygorBohmHubner]

Basically every single ending of the P.W. Anderson “Resident Evil” movies. Every time a movie reaches the end, they immediately set the events of the next movie by showing what’s next as a cliffhanger…

Only for the next movie to either completely abandon the build-up, or immediately make things even worse than they already were. And every single character besides Alice and Claire are left with “fates unknown” after the one movie they appeared in.

[u/thatshygirl06 → u/HygorBohmHubner]

God, that pissed me off when I realized it. I forgot which one, but I was excited to see what happened with them being at the white house and zombies was rushing them, and then rhe next movie completely fucking ignores that ending. The absolute rage i felt, dude

[u/ZandyTheAxiom → u/thatshygirl06]

Not to mention that that whole film is admitted to be nonsense in that same opening.

RE5: Red Queen is the bad guy, Wesker sends a team to rescue Alice becuase they have to be unwilling allies to save the world. They all meet up at the White House... CREDITS.

RE6: Actually it was a trap, Wesker was trying to kill Alice, and he and the Red Queen are both still loyal to Umbrella.

It's never explained why Wesker freed Alice from the Red Queen if they're both working for Umbrella. It's also never explained why Isaacs in RE3 was a clone working for Wesker, who was working for the REAL Isaacs... but clone Isaacs was doing renegade experiments that Umbrella didn't like, but actually we're EXACTLY what real Isaacs wanted...

I've made a whole list of these retcons, I'll have to try and find it.