FE11 Rom Hack - Stuck on how to Decompress database

  • Hacking method:

Nightmare

  • Base Game:

FE11

  • Steps to reproduce:

Hi everyone, I am very new at hacking FE games. I have hacked pokemon games before but I’m trying to hack FE11 because it’s my favorite game.
I just want to change the stats and growths, nothing too fancy.
I was able to decompile the ROM and found the database file. But now I’m having a hard time decompressing the database… I’m trying to use Nintenlords Compressor but when I try to select the database file, it doesn’t appear. I’m not sure if I’m missing something. Can anyone guide me.

BatchLZ77: https://gbatemp.net/download/batchlz77.11736/

The compression tool you’re given causes maps to fail to load, use this instead.


  • Use DSLazy to unpack the game,

  • Navigate to the unpacked game files in DSLazy’s location,

  • The file most people will want to edit is NDS_UNPACK/data/data/database,

  • Use BatchLZ77 to decompress the file (If it is compressed, which is likely),

  • Load the decompressed file and the desired module into Nightmare,

  • When finished editing, use BatchLZ77 to compress the file,

  • Replace the old file in NDS_UNPACK with the edited file,

  • Use DSLAZY to repack a new game file

I hope ScubaLuigi’s reply was helpful. If not, could you please share some screenshots so we can see exactly what isn’t working correctly?

Thanks! I finally got the database decompressed. I’m able to load it to Nightmare now! Thanks a lot

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