SPOILER: The beginning of the credits sequence is made to look like an arcade game, with a high score of 11037. This score corresponds to the sequence of "numbers" that turned out to be Leon's name written in blood at a crime scene early in the series.
In the scrolling text of the end credits, there are 8-bit avatars of each of the 15 students. As the show progresses, anyone who has ended up dead up to the end of that episode will have a red X over their avatar, and the character will show up alongside Naegi in the photo backdrop behind the credits.