In Magnetica (a special DS version of the game known as Ballistic or Puzzloop, also seen as PopCap's Zuma), marbles roll down a twisted path toward the goal and it's up to players to stop them by launching new marbles into the oncoming ones. The marbles will disappear if players match three or more in this massive marble elimination. All actions are controlled with the stylus in this puzzler. Nintendo has given the 1998 arcade Puzzloop game new life on the DS: the DS adaptation uses touch-based controls and adds quest, challenge, check-mate and versus modes. Support for DS download play is included.