This repository contains a pack of icons for Game Boy Advance games launched from TwilightMenu++.
These icons are taken from libretro-thumbnails boxarts.
They were all converted to the proper format with the following commands:
mkdir ./icons
for file in *.png; do
convert "$file" -resize 32x32 -colors 15 -strip "./icons/${file%.png}.gba.png";
done
If you want to make a single icon from another boxart (e.g. for a homebrew game), you can use the following command:
convert original.png -resize 32x32 -colors 15 -strip gamename.gba.png
Just download the icons you want and copy them to your SD card to the path sd:/_nds/TWiLightMenu/icons.
If you want to copy all of them, you can (the full size is only 3.4 Mo), but TwilightMenu++ loadings will take much longer.
if your gba games have the No-Intro file names, you have nothing more to do.
Otherwise, for an icon to appear, it should have exactly the same name as the game, ending with .gba.png. For example, Wario Land 4 (USA, Europe).gba.png.