I think the Gba FPS's are great. I own the first Doom as well as Ballistic and Duke Nukem. I recommend all three. If you are looking for an old school shooter, go for Doom. It plays great and runs smoothly. Out of the three, though, I recommend Duke Nukem the most. However, make sure you avoid Medal of Honor Underground. I am a huge fan of the franchise, but ths may be the worst game I have ever played, and I enjoyed Turok Evolution.