Skip to content
Infinite Craft Recipes

How to Make Backdoor Sponge in Infinite Craft

Backdoor Sponge is a long haul. Even on the shortest known route it takes 42 combinations to get there, and the final one is Backdoors plus Wooden Sponge. Expect to build several intermediate elements you will never use again.

The final combination

BackdoorsWooden SpongeBackdoor Sponge

Marathon42 steps from the base elementscrafting depth 66

Full crafting path from the base elements

Start with Water, Fire, Wind and Earth, then follow these 42 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. 35DandelionDustWish
  36. 36EarthPlantTree
  37. 37DustTreeWood
  38. 38WishWoodPinocchio
  39. 39VacuumWaterSponge
  40. 40SpongeSteamSpongeBob
  41. 41PinocchioSpongeBobWooden Sponge
  42. 42BackdoorsWooden SpongeBackdoor Sponge
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 + Dust→ Wish36Earth + Plant→ Tree37Dust + Tree→ Wood38Wish + Wood→ Pinocchio39Vacuum + Water→ Sponge40Sponge + Steam→ SpongeBob41Pinocchio + SpongeBob→ Wooden Sponge42Backdoors + Wooden Sponge→ Backdoor Sponge

What you can make with Backdoor Sponge

Backdoor Sponge at a glance

Steps to craft
42
Marathon
Crafting depth
66
longer than 98% of solved elements
Known recipes
1
only one way
Used in
1
other combinations

Other elements that take 42 steps

Similar effort to Backdoor Sponge, if you want something else to chase.

Frequently asked questions

How do you make Backdoor Sponge in Infinite Craft?

Combine Backdoors with Wooden Sponge. The full path from the base elements takes 42 steps.

How many steps does it take to make Backdoor Sponge?

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

Is Backdoor Sponge hard to make in Infinite Craft?

It rates as marathon. At 42 steps it is longer than 98% of solved elements.

Is there more than one way to make Backdoor Sponge?

Only one known combination produces Backdoor Sponge.

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