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World 9

Hack of Super Mario Bros.


This hack expands the original game with a 9th world.


  • Bowser and Peach can be found in World 9.
  • In World 8, the new fake Bowser’s real character is the red flying Cheep-Cheep.
  • World 9 takes place at night like World 3 and 6.
  • All levels of this world have checkpoint, except World 9-3 (established technical reason).
  • Time is 400 seconds in every level.
  • It can be selectable on the title screen after beating the game.

NOTE: Due to not having a regular World 9 (like in SMB2J), this world was created as World 8-6, 8-7, 8-8 and 8-9 as 8-5 is automatically ignored by the game. Moreover, bonus rooms and hard-only enemies were planned, but didn’t work, so that’s why these are all left out.

ROM / ISO Information:

  • Database match: Super Mario Bros. (World)
  • Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
  • File SHA-1: EA343F4E445A9050D4B4FBAC2C77D0693B1D0922
  • File CRC32: 3337EC46
  • ROM SHA-1: FACEE9C577A5262DBE33AC4930BB0B58C8C037F7
  • ROM CRC32: D445F698



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ContributorType of contributionListed credit
SzemigiHackingASM modification works, level designs for World 9 in GreatEd

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