Ahh, movies based on video games. It

"Caveman" is a 1981 funny movie directed by Carl Gottlieb and starring Ringo Starr, Dennis Quaid, and Shelley Long. The movie is a comedic retelling of the story of early human civilization, set in a time when humans resided in caverns and depend on hunting and gathering for survival.

Many of the movies featured here come from the subgenres cult, horror, exploitation, and erotica films. Some of these movies are also available in the Criterion Collection.Here are links to moviesFilm Fanatics and More