History Main / EternalEngine

* ''{{Rayman}} 3: Hoodlum Havoc'' features a level called Hoodlum Headquarters, an elaborate factory base [[LethalLavaLand full of lava]].
* ''{{Rayman}}'' Origins features one of these complete with molten metal.

* The droid factory in ''Franchise/StarWars: AttackOfTheClones'' is a textbook LethalLavaLand example, using molten metal as the lava.
** And Mustafar in ''RevengeOfTheSith'', where the eternal engine is set in a LethalLavaLand.

* ''{{Pokemon}}'' has its various power plants. It's not as severe as some examples, since the other danger in them is the hordes of Electric and Steel monsters and the occasional lightning bird.

** ''SkywardSword'' combines this with ShiftingSandLand and TomorrowLand with the Lanaryu Mining Facility.
* ''[[SuperMarioBros Mario [=RPG=]]]'' had Smithy Factory from the original game as one of these types of areas, and it was also an OminousFloatingCastle. The X Naut Fortress in [[VideoGame/PaperMarioTheThousandYearDoor Paper Mario 2]] also has aspects of this.

** ''VideoGame/SuperMario64'' has Tick Tock Clock.

* BatmanArkhamCity has the Steel Mill. A very realistic example, too. The only LethalLavaLand type area is the furnace you go through when you start off. Everything else, well, the mill is just the base where Joker is hiding out and isn't running, making this a SubvertedTrope. Batman has to make things run himself to get through it, hitting switches and getting (more like making) a gadget that lets him fire Remote Electric Charges to power devices. The conveyer belts are completely still, even, except for one secret area where you complete a batarang mini-game for a trophy.

* The Dwemer ruins in ''VideoGame/TheElderScrollsIIIMorrowind'' are powered by geothermal energy and manned by complicated enchanted automations who mindlessly perform security and minor repairs on these forgotten cities. The Dwemer were also about to experiment with the power of their [[PoweredByAForsakenChild resident, absent God]] when they were cast out of reality by it.

* World 6-F1 (RGB Factory) in SuperMarioFusionRevival: This fortress level takes place in a high-tech factory with three distinct areas: a red area (lava and fire), a green area (overrun with plant life), and a blue area (a swimming area). This is a key hunt level with a central hub that leads to a boss fight with Dobkeratops of R-Type fame.

* From ''SlyCooper'', a couple of levels in Sir Raleigh's fortress take place in the engine rooms, complete with enormous cogs and gears, fiery furnaces, and electrically charged fan-blades.

* In TimothyZahn's ''Spinneret'' humans stumble, by sheer chance, on a huge alien machine hidden inside a mountain, which has been [[RagnarokProofing dormant but active]] for millennia. It turns out to be a gigantic extruder, which absorbs any metal in and on the planet itself to make super-sticky string, originally destined [[spoiler:to shield a whole solar system from detection]]. It houses enormous amounts of machinery, not to mention an artificial environment for the original workers.

* ''TerminalVelocity'' has the Moon Dagger in episode 1 (essentially a huge spaceship), and the massive supercomputer planet which makes up the last two levels of episode 3.

* ''NineHoursNinePersonsNineDoors'' had [[spoiler: a recreation of the ship Gigantic/Brittanic's engine. Of course, it's only as imposing as the RealLife one is.]]

* In ''{{Homestuck}}'', the planet in the medium LOHAC (land of heat and clockwork) is a sort of EternalEngine, with the vast majority of it being lava, gears, and metal building skeletons.

** Secret Plant Zone in ''SonicPocketAdventure''

* V'Ger in ''Star Trek: The Motion Picture'' is a machine so vast it could (as Uhura and [=McCoy=] say "hold a crew of tens of thousands...Or a crew of 1,000 that are ten miles tall," and the 'Enterprise' spends a large portion of the film inside it. When viewing V-Ger's holographic memory, Spock sees a "machine planet' which he speculates may be V'Ger's homeworld.

* Margaret Weis & Tracy Hickman's ''DeathGateCycle'' featured a floating island-machine, the Kicksey-Winsey. This machine is so vast and complex that in the centuries after its designers had abandoned it, the enslaved dwarves left to run it have turned their acts of maintenance and assembly into a religion; they no longer understand why the machine does anything, but have managed to keep it operational.

** Silver Castle Zone in ''SonicBlast''

** Mad Gear Zone from ''VideoGame/SonicTheHedgehog4''.

Named after a stage in ''VideoGame/SonicAdventure2'' (which was actually in a giant space station if you want to get technical, but eh).

* The FinalFantasy series, despite not being a platformer series, like this trope a lot, with quite a few of its games being set in a {{Steampunk}} environment. Deserving special attention is Nibelhelm's Mako Reactor in ''VideoGame/FinalFantasyVII'' for having lots of plot-important [[TechnicolorScience fluorescent green chemicals]].

** Even as far back as FinalFantasyIV, we have a rather interesting case, namely when the party enters [[spoiler:the Giant of Babil.]]

** Necron tomb complexes often carry this theme, though Necron technology bears little resemblance to human tech, or anybody else'sfor that matter. Case in point being the [[PlanetSpaceship World Engine]].

* Many of the Imperium's factories in ''TabletopGame/{{Warhammer 40000}}'' are often described as these. "Small city" is a severe understatement for some of the bigger ones. Then you have the Forge Worlds, which are ''entire planets'' converted into factories.
** Necron tomb complexes are often like this as well in theme, though Necron technology bears little resemblance to mere human machinery. Case in point being the World Engine.