Guillermo del Toro says he wrote "about 20" scripts that were never filmed
This includes Beauty And The Beast, The Haunted Mansion, and At The Mountains Of Madness

Introducing Endless Mode: A New Games & Anime Site from Paste
Guillermo del Toro Photo: Christopher Polk
Back in 2010, Guillermo del Toro was attached to write, produce, and possibly also direct the remake of The Haunted Mansion. It was the perfect fit: He’d always loved the ride, and collected memorabilia from it. His version was supposed to be appropriately scary, instead of a comedy like the 2003 movie starring Eddie Murphy. But for unspecified reasons, del Toro didn’t get to make his Hat Box Ghost-focused film. Instead, Disney decided to go a very different direction for the remake, with Justin Simien directing and writing it, and Owen Wilson, LaKeith Stanfield, and Tiffany Haddish co-starring.