
Perseus’ dilemma, unknown to him until the action begins, is that he is the mortal son of Zeus (Liam Neeson), king of the gods.

The film’s mythological world has rugged scenery - shot in Tenerife (a resort island off the coast of Africa), Wales and Ethiopia - and otherworldly battles between men and beasts that fill the screen with a mosaic of unbridled action. It’s a pity the idea didn’t occur in preproduction, as the opportunities for real 3D excitement exist in virtually every frame.

Few moviegoers will think it’s worth the extra bucks. Added as an afterthought in postproduction, the 3D barely registers. The major drawback, especially now, when 3D is all the rage, is its feeble effort in that department. should reap a worldwide whirlwind of boxoffice lucre with this fanciful adventure. Solid teamwork by a host of digital animators, special effects personnel, art directors, hair, makeup and prosthetic designers and game and athletic actors make “Clash” a popcorn movie that reaches back to the fantasy epics of old and forward into the digital future, where the word “unimaginable” no longer exists.

Then it’s off to the races as our hero, Perseus (“Avatar’s” Sam Worthington), must vanquish increasingly lethal monsters in a quest to rid humankind of the cruel and mettlesome gods who would rule man for all eternity. After an awkward half-hour or so as it struggles toward a visual style to represent the world of Greek mythology, “Clash of the Titans” kicks into action with a battle between human warriors and a giant scorpion.
