The Sega Saturn version of the game contains hidden files that can only be accessed when loading the game disc on a PC. 15 pieces of character artwork and a text document containing messages from 13 of the Saturn version's developers including graphic artists, members of the sound team, and programmers can be found. The messages contain insights about their duties, goals and struggles in porting the game from the PlayStation to the inferior Saturn, with several members of the staff having just entered the video game industry and joined Konami prior to work starting on the port. Collectively, they had mixed to positive feelings about the final result, with most being happy with their work, while others feeling they had failed to live up to the PlayStation version. Regardless, much of the staff thanked players for playing the game and encouraged them to mail feedback to them at Konami.

Two notable details from these messages include:

•A story/rant shared by programmer Hideto Imai in the last and longest message about his experience in violating Japan's Motor Vehicle Storage Act by parking his car curbside while staying at his in-laws during development.

•A scrapped character idea shared by graphic designer Yoshinori Suzuki: