One of the most basic expectations of video games is that, sooner or later, you'll get to throw down with the big bad and, after an epic showdown, finally put them down for good, right?
But not all games are created equal, and sometimes, developers will intentionally withhold wish fulfilment from you for a multitude of reasons, whether to leave the door open for a sequel, to subvert expectations, or occasionally for the sake of a troll gag.
Whatever the reason, these 10 video games all denied players the chance to kill these significant bosses, from main villains to memorable supporting baddies.
Just when it seemed like the player would get to exact their bloody vengeance, the fight turned out to be unwinnable, or there was an interruption which prevented the kill from being confirmed.
While in some cases it absolutely fit the game's story and characters, in others it simply left players feeling frustrated and short-changed.
Either way, we sure would've relished the opportunity to put these mighty video game bosses down once and for all...
10. Wheatley - Portal 2
Portal 2's big twist on the original formula is that, ultimately, the player spends the second half of the game reluctantly teaming up with prior antagonist GLaDOS to take down the newly-installed, murderous personality core Wheatley.
And though the first game ended with GLaDOS' survival, fans were nevertheless hoping they'd get to thoroughly dismantle Wheatley at the end of Portal 2.
But alas, the barmy final encounter against Wheatley takes the less-trod path of...having Chell use her Portal Gun to send Wheatley all the way to the moon.
An hilarious post-credits scene even shows Wheatley stranded in space with only the Space Core for company, confirming that he's in many ways condemned to a fate worse than death - even if the satisfaction of obliterating him for good would've been undeniable.