If you are looking for the best viewing experience, the film is available on several platforms: Offers both Theatrical and Extended versions.

Since this version typically contains the full movie or game content, Movie Version Comparison

You can rent or buy the digital versions.

A slightly shorter, optimized version for older home media. Where to Watch Legally

There are several versions of The Return of the King , and the file you have likely matches one of these runtimes:

The Extended Version is accessible through their streaming library. Game Walkthrough & Controls