The Scorpion King expanded its universe through several books that are now preserved in digital format. These are particularly useful for those who want to understand Mathayus's backstory beyond what was shown on screen.
The most direct way to experience the franchise is through the films and the media that surrounded their release. The Internet Archive hosts several artifacts from the original 2002 production: the scorpion king internet archive
Revenge of the Scorpion King : Whitman, John - Internet Archive The Scorpion King expanded its universe through several
: The official movie novelization by Max Allan Collins provides a more detailed look at the plot and character motivations. the scorpion king internet archive