- Adaptation Expansion: The Director's Cut of Lights Out has different versions of the journals and books within the time zones, some with added ominous music; more ghosts can be seen around the lighthouse, and interactive prompts can be used to talk to them rather than simply waiting for a response; and a few of the puzzles are made easier.
- Annoying Video-Game Helper: Near the beginning, Steve, Bear and Jen have a tendency to interrupt you for random questions at almost every step you take. This stops when the team starts disappearing towards the end.
- The Danza: Corbin Hart's children are named Myles and Morgan, which are also the first names of their actors.
- First Installment Wins: The Journal is considered by several fans to be the best in the series in terms of atmosphere and complexity.
- Guilt-Based Gaming: Malakai needs people to help him get back to the time and place he came from, and you're the last one available since the others went nuts. But come on, does Malakai sound like someone you'd want to help? Sure, several of the vanished people deserve rescue, but the game doesn't actually hint that saving them is even possible until the space probe's parting words.
- Ho Yay: George Crabtree and Arther
- Iron Woobie: Timothy Pike.
- Jerkass Woobie: Matilda Fly, though she drops the jerkass part in Lost Souls.
- MST3K Mantra: Best not to ask how or why Benjamin Parker can manipulate the various devices in time periods that are futuristic to him.
- Nightmare Fuel: Plenty. They're horror adventures, after all.
- Paranoia Fuel: Spooky noises, creaking floorboards, creepy writing on the wall, ghosts telling you repeatedly that you're doomed and going to die...
- Probably Up to Eleven in one of the rooms of the hotel in Lost Souls. From the music and overall atmosphere of the place, it would seem like that the pupae in there are going to hatch at any moment, but fortunately, they don't.
- All of Amy Haven's "party games" thrive on this trope, all the more so as the Inspector confronts more and more signs that the "cute little ghost-girl" could and would do anything to him if the whim takes her.
- Prop Recycling: A book called "The Stationer's Guide to Photography", found in James Woolf's bedsheets, was eventually carried over to the Argentinian horror game, Scratches, partially developed by Boakes.
- Schmuck Bait: If you have the soundtrack for Lost Souls, look at the track names and play The Butterfly Room. Definitely not what you think it's going to be.
- Spiritual Licensee: The Journal is the closest we're ever likely to get to a Sapphire and Steel video game.
- Talking to Himself: Two ghosts of children in 2090 have no relation to Myles or Morgan Hart, despite having the same actors.
- Tear Jerker: The Journal. Many of the Shangri-La kids have this type of backstory.
- Technology Marches On: Apparently in 2090, DVDs, floppy disks, and MP3 players are still commonplace. Though Mitsoyu Taku calls the former "primitive" in one of her journal entries.
- Played with throughout the game with items from future time periods scattered in past ones. The first example you find in-game is a floppy disk that has an EVP recording of Malakai, found in 1912. Mr. Demarion has no idea what it is, but the people at the Fetch Rock exhibit in 2004 still used floppies.
- Justified in the case of Ghost Vigil's EVP recorder, which uses cassettes because they're what Real Life ghost-hunters employ in an attempt to capture ghostly sounds.
- That One Puzzle: Placing the symbols to activate the scrying bowl in the original game. Better be good at aligning objects with the subtle grain-lines in wood if you want to tackle this one without peeking at a pic of the solution...
- Throw It In!: A wind gauge in Lights Out spins backwards. Johnathan Boakes admitted it to be a graphical mistake, but left it in, because spooky.
- The Woobie: Arther. Pretty much all the Shangri-La kids.
YMMV / Dark Fall