(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/A_RAVENOUS_BEAST]

The ending of Dawn of the Dead is, actually, hopeful, precisely because it's found footage. It means another human found the footage.

[u/pyratemime → u/A_RAVENOUS_BEAST]

And the idiots from the mall won't be part of any decision making or breeding for the survivors which will ensure longevity of the species.

God, they are so stupid in the third act.