Phineas and Ferb: Across the 2nd Dimension for Nintendo DS is an action-adventure platformer game inspired by the animated film of the same name. Players control Phineas, Ferb, and other characters as they traverse alternate dimensions, combat the evil Dr. Doofenshmirtz and his minions, and solve puzzles using gadgets. The game features a mix of combat, platforming, and puzzle-solving elements, with a light-hearted narrative faithful to the TV show's humor. It's a family-friendly title that appeals to fans of the series and younger gamers looking for a fun challenge.