Phineas and Ferb: Across the 2nd Dimension ROM Download for Nintendo DS (NDS). Phineas and Ferb: Across the 2nd Dimension game is available to play online and download only on Roms Games. Phineas and Ferb: Across the 2nd Dimension ROM for Nintendo DS download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.