There were two separate versions of the game developed for the NES. The first port was handled and published by Jaleco only in Japan. Released on June 23, 1988, it featured characters redrawn in a cute art style and generally shrunken rooms. No scrolling is present, leading to rooms larger than a single screen to be displayed via flip-screens. Many of the background details are missing, and instead of a save feature a password, over 100 characters long, is required to save progress. In September 1990 Jaleco released an American version of "Maniac Mansion" as the first NES title developed by Lucasfilm Games in cooperation with Realtime Associates. Generally, this port is regarded as being far closer to the original game than the Japanese effort. Company management was occupied with other projects, and so the port received little attention until employee Douglas Crockford volunteered to direct it. The team used a modified version of the SCUMM engine called "NES SCUMM" for the port. According to Crockford, "[One] of the main differences between the NES and PCs is that the NES can do certain things much faster". The graphics had to be entirely redrawn to match the NES's display resolution. Tim Schafer, who later designed "Maniac Mansion"s sequel "Day of the Tentacle", received his first professional credit as a playtester for the NES version of "Maniac Mansion". During "Maniac Mansion"s development for the Commodore 64, Lucasfilm had censored profanity in the script: for instance, the early line of dialogue "Don't be a shit head" became "Don't be a tuna head". Additional content was removed from the NES version to make it suitable for a younger audience, and to conform with Nintendo's policies. Jaleco USA president Howie Rubin warned Crockford about content to which Nintendo might object, such as the word "kill". After reading the NES Game Standards Policy for himself, Crockford suspected that further elements of "Maniac Mansion" could be problematic, and he sent a list of questionable content to Jaleco. When the company replied that the content was reasonable, Lucasfilm Games submitted "Maniac Mansion" for approval. One month later, Nintendo of America contacted Lucasfilm Games to request the removal of offensive text and nude graphics. Crockford censored this content but attempted to leave the game's essence intact. For example, Nintendo wanted graffiti in one room—which provided an important hint to players—removed from the game.