At the conclusion of the credits, as the title card is displayed, Pennywise's maniacal laugh can be heard.
After the main credits, the It logo appears on screen, but this time with 'Chapter One' added beneath it. This reveals the movie's real name to us, and also shows us that this is only the beginning.
The Warner Bros./New Line Cinema logos are darker than usual, have an eerie glow around them, until it starts storming around them, with a red balloon floating beside the NLC logo. And the Ratpac logo takes place on a cloudy and raining background.