In addition to the TV and movie Easter Eggs mentioned on the Movie Connections page, you will also find the following in the game:
- In Act III, in the museum area of the Workshop, you will find Harrison from the "Lost Orbit" game by PixelNAUTS studio on display. That studio also did environmental art for "Contrast".
- In Act III, in the museum area of the Workshop, you will find a tower that looks like the Lighthouse, which you will go to after the Workshop.
- The sixth collectible in Act III, the newspaper article on the box in the lighthouse, describes a strange incident at the Baker Street Theatre, and that Inspector Lestrade of the Scotland Yard is on the case. These are clear references to the Sherlock Holmes mythology.