- Actor Allusion: This is not the only time Greg Chun has done the English voice for the main character in a game about a Japanese detective searching for a serial killer who removes their victim's eyes...
- Blooper: The English dub contains an error in which the line "Iris was in So's Somnium", correctly rendered in text, is spoken with the names switched around. Either Boss's voice actress or the script that she was provided slipped up and it wasn't caught before release.
- Fan Nickname: B-set, for the fake Iris (actually Saito in Iris' body) in the pre-release video series.
- The Wiki Rule: AI: The Somnium Files Wiki
Trivia / AI: The Somnium Files