"A vista into a world of wondrous ideas, signifying man's achievements.... A step into the future with predictions of constructive things to come. Tomorrow offers new frontiers in science, adventure and ideals: the atomic age, the challenge of outer space and the hope for a peaceful and unified world."An inexplicably technologically-advanced area in a place where it obviously doesn't belong — for example, a far-flung Jetsons-esque metropolis in a game set during the modern day; or an advanced techno-dungeon in the middle of your Medieval European Fantasy. Either way, expect to run through streets and buildings high in the sky, and to dodge cars — of either the mundane or the flying variety. Named after the section of several Disney Theme Parks dedicated to such things. For the 2015 film, see here. See also Schizo Tech, Zeerust and Decade Dissonance.
- The "dungeon" beneath the Barrier Peaks in the world of Greyhawk is actually a crashed spaceship with Robots, keycards, Ray Guns and Powered Armor, as seen in Expedition to the Barrier Peaks.
- The Alaborn cards from Magic The Gathering's Portal Second Age expansion have guns. Given that Magic features numerous different worlds, it wouldn't be a problem...but supposedly, they really do come from Dominaria, the same world as most other sets released prior to 2003. Where exactly they were during Invasion has never been answered, although it's debatable whether the guns would have been of much use.
- Ape Escape: Dr. Tomoki's Tomoki City level in 3.
I have seen the future, and it is BLUE ON BLUE.
- Unusual for a sports game, Quantum Field of Backyard Baseball.
- Chrono Cross: The Dead Sea is a fragment of alt-1999 A.D., and Chronopolis is supposed to have originated in the year 2300. (Just look at the plaque!)
- Any of the "future" stages in Crash Bandicoot 3: Warped, though there it's justified — the game's major theme is Time Travel.
- Most of Elona is set in a vaguely Medieval-ish setting (though it is hinted that Yerles and possibly the other continents are more advanced), but then you come across a town called the Cyberdome filled with computers and high technology.
- 2010's release, Disney and Junction Point's Epic Mickey, has this has one of its early levels. Including Tron Lines everywhere in the latter half of the level, including the boss, the walking TRON homage Petetronic.
- Esthar of Final Fantasy VIII. The tech difference can be partially justified in that they're also very isolationist, so their advancements wouldn't have spread to the other nations - yet even so, said isolationism is less than twenty years old, and Esthar is full-on Crystal Spires and Togas while the rest of the world is early 20th century. Not to mention that isolationist cultures are typically less advanced, due to the lack of external competition.
- Grand Theft Auto II: The Industrial District is a stark change to what has come before. Loads and loads of mazelike, mile-high catwalks; a strange power plant which wouldn't look out of place in Sonic the Hedgehog; a Ripley Scott aesthetic in the Russian-owned factories, etc.
- Deep Space in Kingdom Hearts Birth By Sleep. Somewhat justified, as it's a galactic spaceship that merely happens to be crossing through The Multiverse back to its proper dimension... a fantasy-dominant multiverse.
- Most of La-Mulana is ancient ruins. Then comes the Tower of the Goddess, a spaceship, complete with futuristic lighting, mysterious monitors, and scaffolding.
- Area 66 from MadWorld.
- Sanctuary Fortress in Metroid Prime 2: Echoes. After having just beaten the quiet, tropical Torvus Bog, the Sanctuary Fortress, which is about as technological as possible, snuck up on players.
- A staple of the Might and Magic series, where each game (except the ninth)) has some sort of sci-fi location, most often the Very Definitely Final Dungeon.
- Omnitopia from Secret of Evermore.
- Metropolis Zone, Scrap Brain Zone, Metal City, Grand Metropolis, Power Plant, Eggmanland, and many more all from the Sonic the Hedgehog series. Justified in that they are presumably the work of Robotnik/Eggman, except for Grand Metropolis. The Sonic Riders subseries will have a level of technology far above the rest of the Sonic games. Zero Gravity has a pair of courses set in what looks like modern-day Japan, but the game explains that this is an artificial construct.
- Robotica Farms from Spyro 2: Ripto's Rage. Another example is from a level not too far from Robotica Farms: Metropolis. It's an even bigger example of this trope because it's a domed robot city, perhaps the urban counterpart to Robotica Farms.
- A lot of levels in Super Mario Galaxy are like this, since the game takes place in outer space.
- Future Fuckballs 2010 in The Angry Video Game Nerd Adventures.
- The Dwarves from The Elder Scrolls have been extinct for over 3,000 years, but were several centuries more technologically advanced than any other modern-day civilization in the 'verse. Word Of God says this is because their alien belief system forbid them from using proper magic.
- The Legend of Zelda: Majora's Mask has the Great Bay Temple, an underwater factory of sorts with a very complex pipe and drain system.
- The Legend of Zelda: Skyward Sword has the Lanayru Mining Facility, with what seems like the only place in all of Hyrule history so far to have electricity.
- Gnomeregan (and anything gnomish) in World of Warcraft.
- Also any area built by the Titans, such as Ulduar.
- Cliffport City in The Order of the Stick. The characters even lampshade the fact.
- The art of Nick Kaloterakis, as seen on the covers of Popular Science.