Some films are such great successes that a follow up is instantly considered. Some of these sequels work wonders; others even surpass their originals (The Dark Knight, for example, or Friday the 13th Part 2) whilst many fail hard (Terminator: Rise of the Machines and Batman and Robin). Looking at the more unfortunate follow ups to our favourite movies, it's a sigh of relief that some proposed sequels never got the go ahead.
Family favourites, comedy icons, classics and action flicks - no one genre is safe from the possibility of a bad or completely redundant sequel. Though none of the following films were ever released or even filmed, the fact that they were even humoured at one time is quite baffling. Some even venture into the realm of insulting their predecessors.
Many films on this list simply didn't warrant a follow up, but producers thought their popularity demanded one. Others were planned but fell through because the original ended up being a failure. Whatever the reasons, here are 12 movie sequels that thankfully never happened.