Maniac Mansion (SW) ROM Download can be obtained free for Nintendo on EmuGames.net only. Play emulator game in English for the USA region. Maniac Mansion is a NES ROM that you can download to your computer or play online within your browser. You can also download roms such as Maniac Mansion and Animaniacs that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.