NQ2's True Setting (Spoiler)

NeoQuest II sets itself up to be a typical swords-and-sorcery medieval RPG, just like the original NeoQuest was. And indeed, most of the game plays out that way. But under the surface, something's wrong, and we find out what, after you defeat the evil wizard and save the king: it isn't a high fantasy, but a science fiction. And this was only the game's first act out of five.
(Note: The game's cutscenes were originally silent; sounds were fan-added for the sake of this upload. The voices are generated by NovelAI, the sound effects are from royalty-free libraries, and the music is taken from other Neopets games.)

Example of:
First-Episode Twist