Films may not be completed for several reasons, with some being shelved during different stages of the production.
Withdrawn films are similar except they did have brief showings but cannot be shown again, also usually for legal reasons.
"[1] Exceptions do exist: these include Gulliver's Travels and The Jigsaw Man, both of which shut down when they ran out of funds but after a year or more found new financing and were able to finish shooting.
[citation needed] Films that were abandoned during the pre-production stage before principal photography began, and significant preparations had been made such as a completed script, hiring of key cast and crew, scheduled start date for filming, and construction of sets.
Casper Van Dien (1997) Films that were abandoned after principal photography had commenced, or in the case of animated films, after animation had begun.