* ActingForTwo:
** Multiple games:
*** Pepper Roni, Mama, Laura, Maggie Post, Valerie (in ''LEGO Island 2''), Rhoda Hogg (in ''LEGO Island 2''), Jenny, and Belinda are all voiced by Diane Perry in the sequels.
*** Jack, Rich Pickins, Steve Hen, Rob Banks, Brickster-Bots, King Leo, and Johnny Thunder are voiced by Mike Jones in ''LEGO Island 2''. He also voices Clickitt, Red, Gnarly Bones, and Timmy in ''Island Xtreme Stunts'', but [[TheOtherDarrin does not reprise Jack O'Trades]].
** ''LEGO Island'':
*** The Brickster, Gideon Worse, and a shark are voiced by David L. Lander. The shark comments that the Brickster reminds him of himself.
*** Mama Brickolini, Polly Gone, and Mrs. Pollywanna are voiced by Creator/JuneForay.
*** The Infomaniac, Captain Click, Marty Snaps and Mr. Pollyanna are voiced by Patrick Hagan. In an instance of SignificantDoubleCasting, both Infomaniac and Click fill the {{Mentor|s}} role for players.
*** Mr. Super, Buck Pounds, and Enter are voiced by Wes Jenkins.
*** Bill Ding, DJ Radio, and Studs Linkin are voiced by Terry [=McGovern=].
*** Dr. Clickitt, Ed Mail, and Return are voiced by Frank Hausman. Notably, Clickitt and Ed are brothers.
*** Nancy Nubbins, Dorothy Funberg, and Kathleen N. Right are voiced by Kathleen Salvia.
*** Valerie Stubbins and Mrs. Jingle are voiced by Tamborine Bancroft.
*** Snap Lockitt and Bradford Brickford are voiced by Doug Boyd.
*** Red Greenbase, Jack O. Trades, and Captain D. Rom are voiced by Bruce Robertson.
** ''LEGO Island 2'':
*** Papa, Nubby Stevens, Snap, Darren, and the Old Fisherman are voiced by Tom Clarke-Hill.
*** Nick, Infomaniac, Brickster, Bill, Clickitt, Ed, DJ, Pete Bog, and Super Station Master are voiced by Jack Roberts. This continues the SignificantDoubleCasting of Dr. Clickitt and Ed Mail being brothers.
*** Red, Technician Bob, Cedric the Bull, Dr. Kilroy, and Mr. Hates are voiced by Carl Kingston.
*** Nancy, Princess Storm, Pippin Read, and Queen Legotiti are voiced by Laurel Lefko.
** ''Island Xtreme Stunts'':
*** Nick, Snap, Enter, Return, Bob, and Lucky Larry are voiced by Alan Marriot.
*** Papa, Brickster, and Director are voiced by John Guerrasio.
*** Infomaniac, Jack, and Super Station Master are voiced by Nigel Pegram.
*** Nubby, Ed, DJ, and Studs are voiced by Brad Levelle.
*** Nancy, Valerie, and Penelope Puff are voiced by Maureen Oakeley.
*** Rhoda and Sky Lane are voiced by Sharon Holms.
*** Shugu, Jimmy, Liam Lense, and Phil Maker are voiced by James Goode.
* AscendedFanon: The name Jack O. Trades (mentioned [[AllThereInTheManual in the manual]]) was intended for one of the car mechanics in the first game. However, this is never explicitly stated in-game, so [[http://web.archive.org/web/20040619223559/http://www.geocities.com/wonkeyzonkey/chars.html a fan website]] instead attributed the name to the Flying Legando with an "O" on his shirt. Both sequels refer to the Flying Legando as Jack O'Trades, seemingly going with the fan website instead of the original script.
* DescendedCreator: Wes Jenkins, the first game's creative director, also voices Mr. Super, Buck Pounds, and Enter in the same game.
* DummiedOut:
** ''LEGO Island 2: The Brickster's Revenge'': A small tomb-like area near a pyramid was removed from the game, but all the developers did was block off the entrance, leaving the tomb's inaccessible interior still present in the game. It's still possible to get inside with a game modification.
** A large number of unused dialogue tracks are still present in ''LEGO Island 2''[='s=] files, most notably including cut scenes of Cedric the Bull and Mr. Hates returning in the OGEL levels and the Brickster pulling a LukeIAmYourFather joke on Pepper.
** In the UsefulNotes/GameBoyAdvance version of ''LEGO Island 2'', there is a girl who is complaining that she lost her towel but she thinks she sees it "in the bushes". Pepper responds to her by saying that he'll go look for it. There's a small hedge maze of bushes nearby, but there's no towel anywhere.
** The memetic "you have to put the CD in the computer" line is an edit of a line telling the player to put the CD ''back'' in the computer, which is not used in the final game (the game just crashes if the CD is ejected). There's a second line to the same effect but more verbose, and phrased in a way that suggests the game could have functioned partially without the CD for a while.
* KeepCirculatingTheTapes:
** All three games are no longer available for purchase, leaving fans to distribute the [=ROMs=] online. While LEGO doesn't actively support this digital piracy, they're apparently willing to turn a blind eye to it.
** For a more literal use of "tapes": The first game's soundtrack was for many years only available through the game itself, where it's stored as low-quality 11025 Hz mono tracks due to space limitations. The master tapes were lost in a house boat accident, but one of the soundtrack's composers, Lorin Nelson, has kept cassette backups of many of the tracks and these have since been made available [[https://projectisland.org/music/ here]].
* OrphanedReference:
** ''LEGO Island'':
*** The first game mentions how you can remodel several buildings in the game by clicking on them, including the store and the bank, which was intended to be a much more prominent feature, but in the finished game only a single house on the east side of the island can be changed.
*** Dr. Clickitt mentions that the hospital is so busy that it should have its own title: ''Adventures in LEGO Hospital''. Since the game was originally titled ''Adventures on LEGO Island'' before its title was abridged to simply ''LEGO Island'', this joke loses its context in the released game.
** ''LEGO Island 2'':
*** The [=PS1=] port dropped the fishing minigame, but Pepper still makes mention of having caught a big fish after where it was originally placed.
*** Between Adventurers' and Ogel Island, the original intention was to have the player lure the bots over to the police station with the boom box. In the finished game, you simply have to walk up to them with the radio and wait long enough to stun them. Despite this, the characters still make references to luring the bots when talking to them.
*** In the "Asteroid Belt" minigame, Mr. Hates and Cedric were poised to return and shoot lasers at you. The finished version has you doing nothing except dodging asteroids, but the victory messages still make references to dodging lasers.
*** In the GBC version, [[Toys/LEGOAdventurers Slyboots and Hotep]] have unlockable trading cards, but these characters do not actually appear in-game. The reason for their inclusion most likely stems from [[https://brickstobytes.org/games/lego-island-2/phanta-sea-and-adventurer-s-island-scenes a scripted "Hotep's Tomb" area]] that was cut from the final game.
* TheOtherDarrin: Across the three games of the series, the vast majority of characters were recast from one game to the next. Diane Perry is the only voice actor from ''LEGO Island 2'' to return for the same characters in ''Island Xtreme Stunts'',[[note]]Mike Jones also returns, but Jack O'Trades is recast.[[/note]] reprising her role as Pepper Roni, Mama Brickolini, Laura Brick, and Margaret P. Post; however, Valerie Stubbins and Rhoda Hogg were recast.
* RefittedForSequel: ''Island Xtreme Stunts'' introduces a new character named Brian Shrimp. However, Brian was actually intended to appear in the first game as a surfer, as indicated by [[https://padandpixel.com/wp-content/uploads/2020/12/LEGO-Island-Design-Documents.jpg design documents]] and [[https://web.archive.org/web/20070611222044/http://www.conceptdotcom.com/comicbook-productguide.pdf an early draft for the manual]]. According to the [[https://archive.org/details/character-bible-v-0-4/page/8/mode/2up character bible]], he was included in the third game since Silicon Dreams Studio found his unused voice clips in the game's source code.
* ScrewedByTheNetwork: A day before the first game's release, the crew making the game was fired to avoid giving them high bonuses.
* StillbornFranchise: Subverted. The first ''LEGO Island'' game was intended to be the first part in a six game series, with other games exploring the other islands and areas in the Phanta Sea. However, these were all scrapped before development got far due to [[ExecutiveMeddling Mindscape firing the development team a day before the first game's release]]. While of course a second game ''was'' eventually made, it wasn't ''quite'' the franchise that was originally intended to spawn out of it.
* UrbanLegendOfZelda:
** From the first game, many cheat code sites say that if you beat all levels with everyone, you'll see 5 B's on the Infomaniac's map, and these will somehow lead to bonus levels. This is completely wrong. You'll never see 5 B's on the Infomaniac's map, even if you get all Red Bricks and beat the Brickster.
** In the second game, a cheat that supposedly gives you unlimited health has popped up around the Internet several times for some odd reason. This is blatantly false considering there is no such thing as "health" in the game, yet it just won't stay away from cheat code sites.
* WhatCouldHaveBeen:
** [[http://le717.github.io/LEGO-Island-VGF/legoisland/photos/islandrough.jpg An early concept image]] shows the island was bigger than the final design, with more locations and a different race track as well as what seems to be a school.
** The soundtrack was going to have high profile musical artists such as Music/MarkMothersbaugh (who would later score ''WesternAnimation/TheLEGOMovie''), [[Music/TheDoors Ray Manzarek]], and Duane Eddy. The idea was scrapped due to budget issues.
** As seen in [[https://www.youtube.com/watch?v=x_Y8ACj2rlo this behind-the-scenes video of the first game]] at 1:09, The racing mini-game was much different from the final involving loops and multiple pathways.
** The first game's infamous BadEnding [[https://youtu.be/bt2KLkE5pck?t=215 was originally much longer and even darker (basically a darker recreation of the game's intro)]], but was made shorter and less harsh in the final product due to concerns that it would upset young players.
** A SpinOff for the series called "Beneath the Phanta Sea" was planned, but never came to be for political reasons.
** ''LEGO Island 2'' was intended to be twice as big as what it really is. Due to its rushed production, however, much of it was scrapped and it became an ObviousBeta. It was also planned to have Captain Click (from the LEGO Pirates line) as the series new ''BigBad'', the pirate door in the first game was {{Foreshadowing}} this.
** LEGO Interactive producer Dave Upchurch revealed some interesting background on ''LEGO Island 2'' on his [[http://dupchurch.com/?portfolio=lego-island-2-various website]], including a tie-in TV show and a ''Videogame/SuperMario64''-esque platformer as potential elements of what ultimately became the game.
** In addition to the two mentioned directly above, a TV show with Captain Click being the main antagonist was once pitched to a currently unknown network and was supposed to tie-in with the aforementioned canned sequels. On September 30, 2018; Lorin Nelson, composer of the first LEGO Island, [[https://www.youtube.com/watch?v=RghFUb0-6VY uploaded the pilot to his personal YouTube channel.]]
* WorkingTitle:
** ''Lego Town'' (referencing the Lego Town toy line from 1978 to 1996).
** ''Adventures on LEGO Island'' in its early 1996 beta.
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