3 SNK games have just been announced for the GBA
Metal Slug Advance (!!)
SNK vs Capcom Advance (!!)
King of the Fighters Advance (meh, how is this any different from KoF EX 1 and 2?)
Bear in mind that these have been announced for japan ONLY, no US release announced yet.
Metal Slug might be ok. SNK vs Capcom will suck. KoF will suck.
KoF is a good NEOGEO game. It doesn't work well on GBA/portables. Same to SNK vs Capcom (same engine). Metal Slug is a platformer, so it could be done.
SNK vs Capcom would work FINE on a gba, remember how good it was on the NeoGeo Pocket Colour? I'd like to see card fighter clash remade as well.
Metal Slug, alright, I'll probably get the KOF game, even if it is terrible.