Borderlands
Borderlands 1 isn’t as popular as its sequels and that’s probably because of everyone’s mixed feelings about the ending. Vaults are a key part of the lore and setting within the series and throughout the first Borderlands, they were made out to seem like some incredibly powerful and important structures.
However, we finally reach the end of the game to open up the fabled vault only to…close it again. There are parallels to Greek mythology here with the planet of Pandora, Pandora’s Box, and the vaults but it was still kind of lackluster.
Of course, you could also say the ending is a bit poetic and that the vault does serve a purpose. Just like Borderlands 3, the first game’s ending may or may not give you the satisfaction you were expecting.