Following the plot of the movie,
Scorpion King places you in the role of Mathayus (AKA the Rock) in a mission to rescue his wife from the wizard Menthu. In order to do this, Mathayus must first find the mythical Sword of Osiris, and power up his magical gauntlet by defeating Menthu's minions. By the end of the game Mathayus is one badass warrior capable of laying the smack down on just about anyone.
Mathayus wields two other weapons during his quest. The first is the broadsword which is your general, all-purpose power weapon, while the twin-scimitars' attack lend a needed edge of quickness to battles as well as allowing Mathayus to climb walls and ceilings. As you defeat enemies, you can collect gems that will power up your weapons with five levels of fire magic.
Scorpion King is not a very original game, but it blends the best of classic games such as Castlevania. In fact, if you were to give Mathayus a whip this could easily be passed off as another Castlevania game (the older ones, not the Metroid-style ones). All the side-scrolling standards like collapsing floors and seemingly impossible jumps are here, making for a fun, if a bit standard, gaming experience.