pretty much yes, when unzipped you just copy over to you phone, any folder will do. then run scummvm and it has an "add Game" button, this will prompt for the folder name this is the folder you copied the game to on you phone, just go into the folder and then hit "choos" this should then find the game and will at it to the list. you can now play away

secret of monkey island 1 & 2 on scummvm is good too

I need to get metal slug for gba, I finished both dooms on gba. Doom2 ran a little slow but overclocked it ran perfik!