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Hero: I remember being irritated that the Vale of Merdelain wasn't more structurally sound.
Ammon Jerro: Yes. That powerful and evil beings insist on causing destruction even as they die is an unfortunate habit.
Neverwinter Nights 2: Mask of the Betrayer.

A boss-type monster whose destruction causes the location to self-destruct (see Collapsing Lair). Usually results in a scene after the final battle wherein the player must make a hasty escape before the clock runs out.

Commonly happens with Final Bosses in RPGs and Metroidvanias.

Always seems a bit too contrived, though Terry Prachett suggested in his first Discworld novel The Colour of Magic that this phenomenon was due to entropy (having been frightened away by the Cosmic Horror boss) making up for lost time. Or perhaps the lair simply has No Ontological Inertia.

Can be justified by some form of Dead Man Switch. Not related to Load Bearing Hero, except in as much as he'll have to hold up the resulting Collapsing Lair for his friends to escape.


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