Knightmare/YMMV


 * Nightmare Fuel: The life force meter.
 * In more detail: The life meter took the form of a knight's helmeted head for the first 5 seasons. As the Dungeoneer gradually lost health, pieces of the knight's helmet broke off and flew away. Okay, not so bad. But then when the helmet was completely gone, the skin of the knight's head began peeling away to reveal a skull underneath. As the face goes through a series of suitably shocked and horrified expressions until it no longer has lips to emote with. And after that, the skull itself cracked and fell apart, the remaining chunk of it flying towards the camera to leave just the eyes which then rolled out of the screen one by one. BONG!
 * Ruined FOREVER:
 * Several felt this way when the entirely studio-bound setup in Series 1-3 was dropped, and location filming and the Eye Shield came into use.
 * This claim was also made when a team was allowed to use a shortcut to bypass Level 2 in the final series, and went onto record what would be the show's last-ever victory.
 * Seasonal Rot: It's widely accepted among fans that despite its insane difficulty in comparison to what came later, Series 3 was by far the best of the show's run.
 * What an Idiot: A team was once told to not wake up the dragon and to use a spell first, and an advisor then insisted they wake the dragon up first.