Judging from screenshots,
Samurai Jack: The Amulet of Time looks like the traditional side-scroller. It's not until the second level that you realize the game is more of a side-scroller in the vein of
Metroid or the newer
Castlevania's than something like
Mario or
Sonic. For those unfamiliar with the 'traditional'
Metroid setup, each of the game's worlds are separated into different worlds that are all connected. Instead of progressing by levels, Jack can travel to whatever area he wants, as long as he has the world's 'key item'. For example, in order to get to one world, Jack might have to find the Ice Amulet so he can freeze a waterfall and climb up to the world. However, in order to get the amulet, he has to get to the Ice World which requires the hammer to break down weak walls. Although it may come off as a tad complicated at first, the flow of each progression is handled really well and adds a puzzle solving aspect to the game.
The game's plot is the same as the show. The evil wizard Aku sends Samurai Jack to the future. This allows Aku to take over the world, and after arriving in the future, Jack learns of an amulet - The Amulet of Time - that would allow him to travel back to the past and stop Aku. Unfortunately, the amulet has been divided into four parts and scattered across the world. This sets Jack on a mission to find the four pieces and set things right.
Although Samurai Jack desperately wants to be a Metroid-like game, a few technical problems keep it from being what it could be.