Executive ProducerSteven Spielbergpushed for a theatrical release for this film in 1998, but Warner Bros ended up releasing it straight to video in 1999.
The USA VHS release included a Christmas ornament with Yakko, Wakko and Dot.
This is the only piece of Animaniacs animation that was digitally animated prior to the show's reboot,Animaniacs (2020).
The only directorial work of Tom Ruegger during his entire animation career, as of 2024.
When King Salazar sends the Warners to "The Cave of your worst Nightmares" they meet people that scared them from previous episodes. Mr. Director from "Hello Nice Warners", the creepy gas station worker and his gross bathroom from "Potty Emergency" and Baloney the Dinosaur from "Baloney and Kids".