Not your typical "movie tie-ins" list. Here is a list of videogames that are not strict adaptations of the source material, but rather story continuations often made after the IP was popular (e.g. The Thing). The film IPs tend to have 'cult status', and these continuations are developed for niche fanbases with the intention to continue a story in some meaningful way.

Some of these are great, have become cult classics in their own right and are often considered canonical to the original film (e.g. The Warriors, The Godfather), some have had input from original creators (e.g. Ghostbusters, Stranglehold, Back to the Future), whilst others have been ridiculed upon release for tarnishing the reputation of the film in question (e.g. Reservoir Dogs, Evil Dead: Hail to the King, Colonial Marines).

I've classified these as the following: direct sequels and direct prequels, interquels (stories between film events), sidequels (stories taking place alongside film events) and intraquels (stories that take place within film events).