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[[quoteright:160:[[VideoGame/CommanderKeen http://static.tvtropes.org/pmwiki/pub/images/temporary-platform_commander-keen2_8489.png]]]]
[[caption-width-right:160:Dum-de-dum, de-dum, de- FUUUUUUUUU...]]

-> ''Jump on, jump off. Don't dilly-dally.''
-->-- The manual for ''VideoGame/{{Scaler}}''

A TemporaryPlatform is an infamous variation of the FloatingPlatforms that exist primarily in 2D platform games, which can only be used for limited durations at a time. These come in a few distinct varieties:

* '''Crumbling platforms''' appear solid at first, but once the player steps on top of one it will shake, sag, descend, (etc.) and after a few seconds disappear entirely -- the player must locate the next safe footing, and ''fast''. These usually have some kind of visual cue (cracks, etc.) to warn the player of their unstable nature, but not always. A SubTrope of this is the FakePlatform, which affords no warning or time for the player to leap off of it, instead immediately crumbling/falling/exploding/vanishing upon contact. Sometimes, the platform will inexplicably reform on its own, whether some time later, or when it goes offscreen (especially if it's necessary to prevent an {{Unwinnable}} situation where permanent disappearance of platforms would prevent you from reaching your goals.)

* Non-timed variations of the above can also occur, such as platforms that only disappear ''after'' the player leaps off of it, or platforms that allow multiple uses before disappearing.

* '''Timed platforms''' appear and disappear at specific intervals regardless of the player's movement or action; the player must synchronize their maneuvers to land on one when it appears, then jump off before it vanishes again. Usually, there will be safe footing nearby allowing the player to study these platforms at a distance before attempting to challenge them directly.

Sometimes you'll encounter these platforms one at a time, but in most cases they will be arranged in groups, forming some sequence or pattern which the player must navigate across (IndyEscape style) as the platforms disappear (and/or appear) around them; sequences like these can become ''very'' NintendoHard when they are stationed above a BottomlessPit or SpikesOfDoom.

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!!Examples:

* The console version of the video game of TheFilmOfTheBook of ''ASeriesOfUnfortunateEvents'' has a level that consists almost entirely of these and more open air than you can shake a stick at.
* The ''Mario'' franchise is replete with all varieties:
** The Donut Lifts from ''VideoGame/SuperMarioBros3'' (and subsequent games) fall after a couple of seconds of Mario standing on them. There are moving platforms on rails, some of which are on open-ended tracks that allow the platform to fall off at the end.
** The original ''VideoGame/SuperMarioBros'' has pairs of platforms, each connected to a cable strung over a pair of pulleys. As the side you stay on descends, the other side rises, but if one side rises too far, both platforms will fall into the bottomless expanse below. If the platforms fall off, you get 1000 points.
** ''VideoGame/SuperMarioGalaxy'' may not have Donut Lifts, but it has a good share of Temporary Platforms itself. Several puzzles feature green checkered platforms that start to shrink and disappear after landing on them. It also featured similar tiles found in all three [[BigBad Bowser]] levels that get smashed to pieces upon contact just right before fighting Bowser.
** ''VideoGame/SuperMarioGalaxy2'' also had Beat Blocks, which blinked in and out of existence in time with the music. The Prankster Comet challenge for that galaxy was very much NintendoHard, even with a checkpoint and Yoshi's flutter jump to assist the player.
** ''VideoGame/SuperMarioWorld'' has both temporary platforms with a countdown of four seconds or less as well as Donut Lifts that start to drop as soon as you step on them. [[GameMod Romhackers]] love both types.
** Most 2D Mario games since ''Super Mario Bros. 3'' have coins that turn into temporary platforms when you step on a P Switch.
* A lovingly NintendoHard staple of the ''VideoGame/MegaMan'' series. Almost every game includes a few screens where blocks appear and disappear in a set pattern.
** The longest such sequence is in Heat Man's stage in ''2'', which spans ''several screens'' (above a lethal LavaPit and then a BottomlessPit). Most people don't even bother with the platforms, instead flying across with the Item-2, an early version of the Rush Jet.
** In Magnet Man's stage of ''3'', one sequence includes a magnet on the opposite side threatening to pull you off into the BottomlessPit below.
** In the final level of ''VideoGame/MegaManAndBass'', a particular set of disappearing blocks alternates between two nearly identical patterns. As a rather cruel trick, the sole difference between them is that the second pattern is missing the final block you'd need to use to reach a ladder, meaning a hasty player will plummet into the spikes below if they observed the blocks forming once and then tried to traverse them on the second appearance.
** As well as Plug Man's stage from ''9'', where the patterns are different if you're playing on the harder ("Hero" or "Superhero") difficulty levels.
** Sheep Man's stage in ''10'' included not only the staple timed platforms (with different patterns for each difficulty level), but color-coded blocks that blink and disappear after stepping on them, and platforms that have to be energized by running on nearby conveyors.
** The fan game ''[[VideoGame/MegaManUnlimited Mega Man Unlimited]]'' goes ahead and makes a Robot Master ''based'' on those blocks. So of course his stage is packed wth them.
** Another series staple are the Count Bombs - platforms with timers displaying how much time you have to use them before they explode.
** Guts Man's infamous stage from the very first game involves a sequence of moving platforms affixed to rails that, despite clearly advertising when they are or aren't solid, sending so many players to their deaths ''from the very outset of the level'' that they almost single-handedly earned the game its NintendoHard reputation. In ''MegaManPoweredUp'' you can at least play as Guts Man and give ''him'' a taste of his own terrible platforms.
** Gyro Man's stage in ''5'' features a bridge composed entirely of platforms that fall after a second of walking across them.
** Chill Man's stage in ''10'' features ice blocks that, crack the first time you strike them, then disappear quickly after being struck a second time. You can, however, walk across them fine.
** The ''VideoGame/MegaManX'' series often has platforms supported by smoking, malfunctioning jets, letting you know they won't hold your weight for long. Just to make your life a living hell, the fourth Zero stage in ''X5'' has disappearing blocks over a BottomlessPit and is nearly three screens long. No memorizing, just move and hope you're fast enough not to die. If you're playing as X, you can just fly over it. Play as Zero, and better hope your reflexes are good.
** The ''VideoGame/MegaManZero'' series naturally picks up the torch, since it's much more NintendoHard than the X series was. For bonus points, the first game in the series adds them in a section straight after two minibosses, and while thankfully not over a bottomless pit, is sitting is above a platform filled with enemies. And the invisible blocks ''shoot at you'' (or rather they shoot down in unhelpful places). Remember that this game has a ranking system that penalizes you for taking damage and dying.
** In his commentary for ''BobAndGeorge'' Dave Anez admits that he always uses Rush to fly over those platforms.
** The [[LiftOfDoom Lifts of Doom]] in Spark Man's stage with BottomlessPits below and SpikesOfDoom above.
** Trapdoor platforms in Shadow Man's stage and parts of Wily's Castle.
** In the final dungeon in ''MegaManLegends 2'' there are red tiles that will crack and break if you stand on them for too long of a period of time. [[MissionControl Roll constantly warns you]] that "the floor's weak."
** VideoGame/MegaManZX has one in the BonusDungeon leading to the BonusBoss. For [[RuleOfThree bonus]] points, the ceiling and floor of the disappearing platforms hallway are also spiked, and once you beat said BonusBoss, you have to travel the hallway ''in reverse'' to get back to the SavePoint. Have fun!
* ''VideoGame/CommanderKeen IV: Secret of the Oracle'' has these in the Miragia level. Accurate to its name, this level has platforms that fade in and out of existence. Solid for about five seconds, intangible for another five, repeat. [[GoodBadBugs Hilariously]], you can cling to the edge of such platforms and remain there while it fades out of existence, so long as you don't attempt to climb up until it is solid again. The game also has "unstable" floating platforms that start falling out of the sky once you stay on them for a second -- but they stay solid and only fall a certain distance (enough to force you to go back and redo a puzzle, but not enough to kill you unless the level designer specifically put a tarpit or flames before the end of their travel).
* ''[[VideoGame/YoshisIsland Yoshi's Island]]'' has blocks with a number printed on them. When you step on a platform of this type, the number is decreased by one, and when it hits zero, the platform explodes. The Donut Lifts also appear in this game.
* ''MutantMudds'' for the 3DS has these very frequently.
* ''VideoGame/DonkeyKongCountry'' has dropping platforms, and a GimmickLevel ("Tanked-up Trouble") with a moving platform that will fall if you dodn't keep it constantly fueled up. There is another level, "Platform Peril", that consists almost exclusively of various moving platforms that shake and fall after a certain distance.
* ''VideoGame/DonkeyKongCountryReturns'' has many varieties of temporary platforms, and NintendoHard sequences like the aptly-named "Platform Panic", where the level terrain appears only at close range, then shakes and starts falling when the player touches it.
* Most ''{{Kirby}}'' games noticeably avert this -- the ability of unaided flight'll do that. However, ''Kirby 64: The Crystal Shards'' gave Kirby a limit on his flying ability, and so threw in a few {{Temporary Platform}}s here and there.
* The old Namco videogame ''VideoGame/{{Mappy}}'' (originally for arcade) has trampolines that can only be bounced on three times in a row before breaking; if a solid platform or nothing was below, you would lose a life. Later levels have true Temporary Platforms worked inside normal platforms--including one on a platform with only one survivable way off.
* The ''{{Metroid}}'' universe generally prefers {{Fake Platform}}s over true Temporary Platforms. Floor tiles that crumble underneath Samus's weight were frequently used to create corridors that required a Speed Booster dash to traverse.
** In ''VideoGame/SuperMetroid'' there were also grapple points that would disappear a few seconds after latching onto them with the Grapple Beam.
** In ''VideoGame/MetroidPrime'', temporary platforms appeared precisely once: in Phendrana Canyon, where the Scan visor clearly warned that they were unstable.
** In ''[[VideoGame/MetroidPrime Metroid Prime 3]]'', the Ice Missiles can be used to create temporary frozen platforms of Fuel Gel, a liquid found virtually everywhere on the planet Bryyo. This applies to pools of the gel (a small circular platform appears and then melts shortly after), and gel-falls (the entire flow freezes).
* ''VideoGame/JakAndDaxter'' is littered with these, namely in more "ruined" areas. Came to an interesting point in ''Jak 3 Renegade'' when (during a tutorial stage) you have to slow down time just to be able to cross the platform.
* ''VideoGame/PrinceOfPersia1'' has loose floor tiles that dislodge and fall moments after the [[NoNameGiven Prince character]] ran across them. Nearby vibrations (from you jumping up and down, for instance) will cause them to shake a little, allowing the player to identify them from a distance. They are useful on occasion for making running jumps off, and permanently holding down {{Pressure Plate}}s where they landed. They can also be dislodged by jumping from underneath, to access secret parts of levels, though standing below falling ones will hurt you if you don't duck. In the sequel ''VideoGame/PrinceOfPersia2: The Shadow and the Flame'', they can kill {{Mook}}s and destroy potions.
** Interquel ''VideoGame/PrinceOfPersiaTheForgottenSands'' features two types of temporary platform, firstly the ability to pause water to turn it into something you can grab onto, and then later remaking formerly existing platforms reappear with the power of memory. This can quickly cause DamnYouMuscleMemory rage during sections where you have to use both at once, turning one off to jump through something that would otherwise block your way to a platform you just turned on with the other ability...
* ''VideoGame/IWannaBeTheGuy'' has no end of {{Temporary Platform}}s, usually situated near SpikesOfDoom. Since it's a PlatformHell pastiche of NES games, it takes the disappearing blocks from Heat Man's stage in ''VideoGame/MegaMan2'' to new heights of frustration, as the player must use JumpPhysics to stay on a single block that teleports around over a spiked floor.
** And in a spiked room just below the start of the game, once you've memorized the platform's pattern, the pattern ''changes'' as you start jumping across, with you falling into the spikes below when the next platform doesn't appear where you expected it to.
** In the Mega Man level, there's a few unlabeled blocks that drop the moment you step on them, and then one inexplicable block which shoots upwards as soon as you touch it, hurtling you into a spiked ceiling.
* Also seen in ''Naruto: The Broken Bond''. Can be both in water (annoying as if you sink, you go back to the last part of land you were on) and in the air (again annoying, as usually spikes fill the area underneath).
%%* ''ManicMiner'' has a lot of these.
* In ''VideoGame/DevilMayCry'', if you return to the bridge you crossed to claim the Pride of Lion at the start of Level Three, it's risen from the ocean (having collapsed as you crossed it), but in pieces. These pieces fall as you jump on them, and don't respawn unless you fall into the ocean (which makes you repeat the fight from Level Two, then boots you back to the start of the bridge). You can either jump across both ways without retracing steps, or cross once, claim the [[HeartContainer Blue Orb Piece]], and leap into the sea for a quick way back.
* ''DevilMayCry 4'' has several in the jungle chapter when playing as Nero. Instead of using the "disappear a while after being touched" scheme, however, those have a schedule of their own.
* ''Videogame/CastlevaniaCircleOfTheMoon'' has these. ''Videogame/SuperCastlevaniaIV'' has the crumbling platform variety. Some of the games, such as ''Videogame/SuperCastlevaniaIV'', have trapdoor platforms.
* ''Franchise/CrashBandicoot'' has tons of these, combined in every way possible with floating platforms that alternate in and out of existence on their own.
* ''TyTheTasmanianTiger'' has temporary platforms in all three games of the series. There are two sorts: ones that operate on a timer, and ones that vanish about a second after you stand on them.
* Most ''SonicTheHedgehog'' games have them, though the series isn't as fond of them as Mario. The first game enjoyed some [[NintendoHard Sega Hard]] FakeDifficulty in the Marble Zone, when the TemporaryPlatform and stable platform that moved up and down used the ''same sprite''.
** The Wii-exclusive Blue Wisp from ''VideoGame/SonicColors'' allows Sonic to temporarily turn blue rings into blocks and vice versa, similar to a P-switch.
* ''VideoGame/{{Spelunky}}'' has temporary platforms in its third area. Oddly, while your character can not normally fall more than seven times his height without taking damage, the platform and your character fall at the same rate and you can "ride" it down to lower ground without taking damage.
* ''WarioLand'' has platforms that appear and disappear. They visibly fade in and out though, so you can always tell how they are going to act. As a result they aren't really too difficult to cross.
* In ''VideoGame/LaMulana'', many floating platforms start to crumble when you step on them.
* ''VideoGame/StarFoxAdventures'' has a room you have to cross to get to the door. The middle of the room is tiled. Before you activate the switch, the tiles stay put, but the door is closed. You have to throw the switch to open it, but this also makes the tiles temporary; you can stay on them a couple of seconds before it starts to drop. Making matters worse, three gates come up. These drop and rise in a pattern. You can stand in the safe area before the tiles while waiting for the first to drop, but waiting for the second and third involves moving from tile to tile, hoping the gate would drop before you did.
* One of the features of the stage builder in ''SuperSmashBros Brawl'' are these - and odds are, if you know someone who has built stages there, they've built at least one heavily featuring them. They regenerate as well, which results in problems both ways - the platform might be missing when you're scrambling to get back up, and you also might have to deal with a platform appearing right where you were trying to go to save yourself.
* One level in a [[EternalEngine lava-filled factory]] in ''VideoGame/{{Frogger}} 3D: He's Back!'' has numerous platforms that open up about four seconds after Frogger hopped on them, and sometimes faster. The level is appropriately titled ''Platform Madness''.
* The original ''VideoGame/{{Frogger}}'' has groups of turtles that periodically dive underwater, drowning you if you are still riding on their backs at the time.
* There are a few of these in the ''VideoGame/HarryPotter'' games- Ones that disappear after you step on them (although if you have autojump on and keep your finger pressed on the forward key, you can get past them) and ones that fold in and out of the wall at intervals.
* ''VideoGame/BioMenace'' has these in a couple of levels. At least one set is not required to finish the level in which it appears.
* The first ''VideoGame/{{Rayman}}'' game features many of these, also including one type of ''cloud'' platform. They only disappear temporarily, but while some just disappear for a few moments after you've stepped on them, others will disappear and reappear of their own accord, which can really cause you trouble if you don't notice it vanish and reappear by itself or time your leap correctly before you actually jump on it.
* ''VideoGame/{{Jumper}}'' series feature two types of temporary platforms. One, coloured blue, falls shortly after Ogmo stands on it, but can still be used once it lands. The second one, red, crumbles instead of falling. It appears in ''Jumper Two [[LevelEditor Editor]]'' and ''Jumper Three''.
* Collapsing floor tiles in ''VideoGame/TombRaider'' are easily recognizable from a distance, but usually have [[BottomlessPit fatal falls]] or [[SpikesOfDoom spikes]] below them.
* There are blocks which disappear after touched in ''VideoGame/MeatBoy''. ''Super Meat Boy'' also adds blocks which appear and disappear on fixed intervals.
* The Wii ''ABoyAndHisBlob'' has these. Unlike other versions of the trope, however, they can actually be beneficial: If you ride one while it's falling, [[NotTheFallThatKillsYou you can safely survive falls that would normally prove fatal.]]
* ''VideoGame/{{Bonk}}'s Adventure'' has platforms that pull themselves apart horizontally when the player land on them.
* ''The Bugs Bunny Birthday Blowout'' has girder-like floating platforms that look as if they could move up or down, but instead disappear and reappear.
* ''FancyPantsAdventures'' has sand platforms in World 3, usually used to reach high places or to complete a timed challenge.
* ''VideoGame/RollAway'' contains Timed platforms, marked by their translucency, and Crumbling platforms, which implode as soon as the ball rolls or bounces over them.
* Some platforms in ''Videogame/FinalFantasyCrystalChroniclesEchoesOfTime'' start falling a second or two after you step on them.
* In ''VideoGame/SpinDoctor'', ring dots vanish forever once you let go of them.
* ''VideoGame/{{Zool}} 2'' has eggs which disappear as you run over them.
* The main feature of area 2-D in ''Legend of Grey Moon''. Here, cracked grey platforms form parts of "jump mazes" where the player must make a series of precise jumps in quick succession.
* In ''VideoGame/TheLegendaryAxe II'', some of the skull platforms in Stage 4 and normal blocks in Stage 6 crumble when stepped on.
* ''VideoGame/QuackShot'' has lots of dropping blocks, including bridges made of them.
* ''VideoGame/{{Qwak}}'' has blocks that dissolve from the bottom up when players stand on them.
* In ''AngryVideoGameNerdAdventures'' has the appearing and disappearing [[DeadlyWalls Death Blocks]], which kill the player. There are also standard ''VideoGame/MegaMan'' style disappearing and breakaway blocks, as well as block snakes similar to ''SuperMarioWorld''.
* ''VideoGame/DontLookBack'' includes the collapsing variant in the lava cave section.
* ''VideoGame/AliceMadnessReturns'':
** In Tundraful, there are a few platforms that descend when you land on them; staying will eventually see you lowered to the surface of the water, where you die (despite you being completely ''underwater'' later in the chapter).
** Some parts of the 2D platforming sections in The Mysterious East have statue platforms that descend onto spikes if you stay on them too long.
* [[VideoGame/OneThousandAndOneSpikes 1001 Spikes]] has multiple breeds of this - Platforms that only stay active for a limited time after hitting a switch, and the classic VideoGame/Megaman variety.
* In ''VideoGame/{{Gruntz}}'', there are two kids of bridges that fall into this: ones that will crumble shortly after being stepped on, and ones that appear and disappear in a predetermined pattern.

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