- Cowboy BeBop at His Computer: IGN had a hilariously bad case of this whenever they wrote previews of Soul Reaver, referring to Raziel as Kain, the Soul Reaver as a Laser Blade, series producer Amy Hennig as Amy Bennig, etc.
- Fan Nickname:
- '"Hash" for Hash'ak'gik.
- "Blood Reaver" is the LOK fans' name given to the Reaver sword that doesn't yet have Raziel's soul inside of it.
- Franchise Killer: After the first three games did very strong, Blood Omen 2 got average reviews, and to fans of the series its story and design aesthetic were a complete departure from the rest of the franchise. The series stumbled on to Defiance, which got a bit better reception on both fronts, but it wasn't enough to save the series.
- The Other Darrin: Mortanius was initially voiced by Tony Jay in Blood Omen, leading to some Wild Mass Guessing regarding the Elder God's identity when Jay went on to voice that character instead. His actor was changed in Defiance, to avoid confusion.
- Screwed by the Lawyers: Don't expect Blood Omen I to be rereleased on GOG.com any time soon, due to a spectacular case of Executive Meddling-induced legal bridge-burning between Silicon Knights and Crystal Dynamics (with Activision as an involved sideline third party), which is best left explained in details by NeoGAF user Mama Robotnik. That said, it's available for purchase on PS3.
- Serendipity Writes the Plot: Turel was supposed to be included in Soul Reaver, Dummied Out locations and dialogue make it clear that Raziel would have eventually gone after him. However, the team was out of time so Turel was cut without mention, and later games made his absence from Soul Reaver a plot point.
- Talking to Himself: Michael Bell, Raziel's voice actor, also played Melchiah and various antagonists. Taken to its logical extreme when Raziel confronts his past self.
- Blood Omen might as well be called, "Everyone is voiced by Tony Jay, everyone who isn't is voiced by Simon Templeman. Except for Moebius and Vorador."
- Trolling Creator: When questioned about the seemingly-Dummied Out HMCS Bitter found in Blood Omen via hacking, Denis Dyack said that there is a legitimate way to reach the ship, seemingly involving four invisible switches scattered around Nosgoth. He then refused to elaborate further, saying he would never talk about it.
- Vaporware: The Dark Prophecy, a straight sequel in the style of Defiance, which was in development for the PlayStation 2 and would have presumably tied up all the loose ends in the franchise... but was never finished, most likely because of Amy Hennig, the head writer of the series after Blood Omen, leaving Crystal Dynamics for Naughty Dog, as well as the death of Tony Jay, the voice of the Elder God. Not to mention the fact that Defiance didn't sell too well.
- What Could Have Been: The development process of the series is infamous among its fans.
- The very first game was originally a Sega Saturn exclusive before moving to the PS1. According to previews, the Saturn version seemed to run more smoothly.
- In Soul Reaver, the Glyphs were supposed to give various elemental properties to the Soul Reaver. They were cut and the concept worked in Soul Reaver 2 and Defiance as the Elemental Reavers. And for that matter, Defiance recycled some axed concepts intended for Soul Reaver 2. Locations that were likely to play host to these abilities can be found in both games; for instance, the lake in Soul Reaver 2 obviously contains a ruined temple that was a prototype Spirit Forge.
- Also from Soul Reaver, there was to be an expanded area of the Human Citadel where Raziel found the lair of the vampire worshippers and killed their Priestess, gaining the ability to possess others. May possibly have been recycled into the "Charm" Dark Gift for Blood Omen 2.
- As covered above, Turel was supposed to be in Soul Reaver with his own territory, but it was axed for time.
- Soul Reaver originally had a different ending that had Raziel kill Kain and reave his soul, granting him the ability to shift between dimensions at will. This would let him access the highest areas of the Silenced Cathedral and activate it, blasting a deadly hymn that would kill all vampires in Nosgoth.
- The mystery of Vorador's resurrection in Blood Omen 2 was intended to be solved in Defiance.
- A human Umah was to appear in Defiance, revealing that she was a priestess before being turned into a vampire.
- A return to the Soul Reaver era was intended in Defiance, presumed to be intended as a Playable Epilogue where Kain saves Nosgoth and permanently destroys the Elder God. This chapter however was scrapped, seemingly due to budget limitations.
- A sixth game, "The Dark Prophecy," was planned after Defiance but didn't go very far. What little is known about it is that it would have similarly revolved around two protagonists and would shift viewpoints between them, but this time, it would be two versions of Kain in two different time periods.
- A project called Legacy of Kain: Dead Sun would've focused on the future of Nosgoth resulting from the end of Defiance, starring a human whose soul (through some freak accident) winds up in control of the vampire that kills him. It was first delayed because the PlayStation 3 couldn't handle it technically, but unfortunately, Square Enix cancelled it in 2012. When it was almost complete. Nosgoth is actually based on what should have been Dead Sun's multiplayer mode.
- And, of course, there's no telling how the series would have gone if Silicon Knights had gotten the rights to the series after Blood Omen instead of Crystal Dynamics.
- All of the above, and even more, can be found on Legacy of Kain: The Lost Worlds, a site dedicated to cut and altered content for the entire series.
Trivia / Legacy of Kain