Just got done playing this on the GBA last night. Sure, it's old but damn, one of my new favorites now. I guess I just like the addition of the egg-targeting system. It adds a lot to the gameplay and the boss fights were all unique in their own way. Aside from it being a port, the graphics and animations were good too for a GBA title. Play it if you can find it.
I want this really bad but after Nintendo announced players choice for GBA I'm just going to wait for it since its in the players choice list.
