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Infinite Craft Recipes

How to Make Backdoorium in Infinite Craft

Backdoorium is a long haul. Even on the shortest known route it takes 73 combinations to get there, and the final one is Backdoors plus Halfadium. Expect to build several intermediate elements you will never use again.

The final combination

BackdoorsHalfadiumBackdoorium

Marathon73 steps from the base elementscrafting depth 106

Full crafting path from the base elements

Start with Water, Fire, Wind and Earth, then follow these 73 combinations in order.

  1. 1EarthWindDust
  2. 2DustEarthPlanet
  3. 3FirePlanetSun
  4. 4FireSunSolar
  5. 5PlanetSolarSystem
  6. 6FireSystemComputer
  7. 7ComputerFireHack
  8. 8FireWaterSteam
  9. 9FireSteamEngine
  10. 10EngineSteamTrain
  11. 11TrainWaterSubmarine
  12. 12SubmarineSystemSubsystem
  13. 13HackSubsystemBackdoor
  14. 14WindWindTornado
  15. 15TornadoWaterTsunami
  16. 16EarthTsunamiIsland
  17. 17EarthIslandContinent
  18. 18WaterWindWave
  19. 19SteamWaveSurf
  20. 20ContinentSurfAustralia
  21. 21EarthEarthMountain
  22. 22MountainWindAvalanche
  23. 23AvalancheWindSnow
  24. 24AustraliaSnowNo
  25. 25WaterWaterLake
  26. 26LakeWaterOcean
  27. 27NoOceanNot
  28. 28DustEngineVacuum
  29. 29FireVacuumBlack Hole
  30. 30Black HoleTornadoSingularity
  31. 31NotSingularityPlural
  32. 32BackdoorPluralBackdoors
  33. 33EarthWaterPlant
  34. 34PlantWindDandelion
  35. 35DandelionWaterWine
  36. 36WindWineBalloon
  37. 37BalloonDustDust Bunny
  38. 38PlantWaterSwamp
  39. 39FireSwampDragon
  40. 40DustFireAsh
  41. 41AshFirePhoenix
  42. 42DragonPhoenixYin Yang
  43. 43Dust BunnyYin YangOpposite
  44. 44FireWineAlcohol
  45. 45AlcoholAlcoholBeer
  46. 46BeerDustPint
  47. 47OppositePintHalf
  48. 48TornadoTornadoHurricane
  49. 49EarthFireLava
  50. 50LavaWaterStone
  51. 51LavaStoneObsidian
  52. 52ObsidianStoneBlade
  53. 53BladeFireSword
  54. 54EarthSwordKnight
  55. 55HurricaneKnightPaladin
  56. 56EngineStoneSteamroller
  57. 57EarthSteamrollerFlat Earth
  58. 58Flat EarthWindFrisbee
  59. 59EarthFrisbeeDisc
  60. 60DiscFireCD
  61. 61EarthWaveSand
  62. 62FireSandGlass
  63. 63FireGlassLens
  64. 64LensWaterMicroscope
  65. 65FireMicroscopeVirus
  66. 66FireVirusFlu
  67. 67FluWaterFluoride
  68. 68EarthFluorideFluorite
  69. 69FireFluoriteFluorine
  70. 70CDFluorineTechnetium
  71. 71PaladinTechnetiumPaladium
  72. 72HalfPaladiumHalfadium
  73. 73BackdoorsHalfadiumBackdoorium
Crafting tree
1Earth + Wind→ Dust2Dust + Earth→ Planet3Fire + Planet→ Sun4Fire + Sun→ Solar5Planet + Solar→ System6Fire + System→ Computer7Computer + Fire→ Hack8Fire + Water→ Steam9Fire + Steam→ Engine10Engine + Steam→ Train11Train + Water→ Submarine12Submarine + System→ Subsystem13Hack + Subsystem→ Backdoor14Wind + Wind→ Tornado15Tornado + Water→ Tsunami16Earth + Tsunami→ Island17Earth + Island→ Continent18Water + Wind→ Wave19Steam + Wave→ Surf20Continent + Surf→ Australia21Earth + Earth→ Mountain22Mountain + Wind→ Avalanche23Avalanche + Wind→ Snow24Australia + Snow→ No25Water + Water→ Lake26Lake + Water→ Ocean27No + Ocean→ Not28Dust + Engine→ Vacuum29Fire + Vacuum→ Black Hole30Black Hole + Tornado→ Singularity31Not + Singularity→ Plural32Backdoor + Plural→ Backdoors33Earth + Water→ Plant34Plant + Wind→ Dandelion35Dandelion + Water→ Wine36Wind + Wine→ Balloon37Balloon + Dust→ Dust Bunny38Plant + Water→ Swamp39Fire + Swamp→ Dragon40Dust + Fire→ Ash41Ash + Fire→ Phoenix42Dragon + Phoenix→ Yin Yang43Dust Bunny + Yin Yang→ Opposite44Fire + Wine→ Alcohol45Alcohol + Alcohol→ Beer46Beer + Dust→ Pint47Opposite + Pint→ Half48Tornado + Tornado→ Hurricane49Earth + Fire→ Lava50Lava + Water→ Stone51Lava + Stone→ Obsidian52Obsidian + Stone→ Blade53Blade + Fire→ Sword54Earth + Sword→ Knight55Hurricane + Knight→ Paladin56Engine + Stone→ Steamroller57Earth + Steamroller→ Flat Earth58Flat Earth + Wind→ Frisbee59Earth + Frisbee→ Disc60Disc + Fire→ CD61Earth + Wave→ Sand62Fire + Sand→ Glass63Fire + Glass→ Lens64Lens + Water→ Microscope65Fire + Microscope→ Virus66Fire + Virus→ Flu67Flu + Water→ Fluoride68Earth + Fluoride→ Fluorite69Fire + Fluorite→ Fluorine70CD + Fluorine→ Technetium71Paladin + Technetium→ Paladium72Half + Paladium→ Halfadium73Backdoors + Halfadium→ Backdoorium

Backdoorium at a glance

Steps to craft
73
Marathon
Crafting depth
106
longer than 100% of solved elements
Known recipes
1
only one way
Used in
0
other combinations

Other elements that take 73 steps

Similar effort to Backdoorium, if you want something else to chase.

Frequently asked questions

How do you make Backdoorium in Infinite Craft?

Combine Backdoors with Halfadium. The full path from the base elements takes 73 steps.

How many steps does it take to make Backdoorium?

73 steps on the shortest known path from Water, Fire, Wind and Earth.

Is Backdoorium hard to make in Infinite Craft?

It rates as marathon. At 73 steps it is longer than 100% of solved elements.

Is there more than one way to make Backdoorium?

Only one known combination produces Backdoorium.

Path verified against the open recipe graph on . Method described in our methodology, data credited on data sources.