Well, I was thinking about modding GBA 2... I think it's a interesting version of Doom and a forgotten one to mod.
I've download a program in which you can edit textures, monsters and a lot of stuff in GBA Doom (the first one), but I didn't see that program for Doom II, which is much more complex and attractive to edit.
The program I mean is called 'GBA Doom editor'.
Any suggestion?
Sorry bad English