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XorTroll edited this page Nov 22, 2019 · 2 revisions


uLaunch allows to add custom entries to the main menu. In fact, this is how homebrew is added to the main menu.


Entries consist on individual JSON files inside sd:/ulaunch/entries, where the name doesn't matter.

However, for entries manually created by uLaunch, these are named by the game's application ID (example: 0100000000010000.json for Super Mario Odyssey), or the NRO's path's SHA256 hash's first half for homebrew NROs (32 alphanumeric characters, like NCAs)

JSON format:

(!) Means that the key needs to be present for the entry to be recognized as a valid one.

  • (!) type: Entry type (1 is for titles, 2 is for homebrew). Title-based entries should be just used for titles inside a specific folder or for custom icons.

  • folder: Folder this entry is in, if not present or empty, this assumes menu root.

Application specific (type 1)

  • (!) application_id: Title's application ID.

Homebrew specific (type 2)

  • (!) nro_path: Path (must start by sdmc:/) to the NRO in the SD (example: sdmc:/switch/Goldleaf/Goldleaf.nro)

  • nro_argv: Optional args to be sent to the NRO when being launched (example: if argv is set to be sample, uLaunch will launch the NRO like <nro-file> sample). Note: if the argument has spaces (a spaced path), remember to add extra quotes ("nro_argv": "\"sdmc:/spaced file.txt\"")

Custom names and icons

  • icon: Custom icon for the entry. Format can be JPG or PNG, but size must be 256x256 (it will be resized when rendered by uLaunch)

  • name: Name text

  • author: Author text

  • version: Version text

Note: Those 3 customizable texts can be used for other purposes, not specially for name, author... ;)


Homebrew inside "Stuff" folder

    "type": 2,
    "nro_path": "sdmc:/switch/Goldleaf/Goldleaf.nro",
    "folder": "Stuff"

RetroArch ROM forwarder (Super Mario Land 2 GB ROM and Gambattle core)

    "type": 2,
    "nro_path": "sdmc:/retroarch/cores/gambattle_libretro_libnx.nro",
    "nro_argv": "\"sdmc:/roms/gb/SUPER MARIO LAND\"",

    "name": "SUPER MARIO LAND 2",
    "author": "Nintendo",
    "version": "Game Boy",
    "icon": "sdmc:/icons/gb/SUPER MARIO LAND 2.png"

Title (Super Mario Odyssey) inside "Games" folder

    "type": 1,
    "application_id": "0100000000010000",
    "folder": "Games"


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