Magnetica is the hand-held version of the popular arcade game Puzz Loop, with a few twists that could only be possible using the abilities of Nintendo DS. Players use the touch screen to flick marbles one by one at an ever-growing spiral chain of marbles. Like-colored marbles attract one another. Whenever three marbles of the same color connect, they vanish, sometimes setting off massive chain reactions.
In single-player modes, players can find bonus items that can slow or stop time, or even reverse the course of the marbles. Challenge mode features 99 levels on four difficulty settings, Quest mode offers players a variety of missions and Puzzle mode requires players to eliminate all marbles on the screen using a limited supply of their own. Players must deal with marble-stymieing obstacles like wind, water, switches and multiple launchers. In the two-player Versus mode, players can frustrate their opponents with an array of diabolical weapons: Ion Clouds create smoke screens, Recoils block an opponent's marbles, Black Holes devour marbles and Gravitons alter the path of launched marbles.