Phantasy Star II was the 16 Bit sequel that is regarded by many as the best in the series (Some will argue PS IV holds that honor), and it is here as well. While the Final Fantasy Games received the spotlight on the SNES, you cannot go wrong here...a solid story and great battles will have you glued.
Phantasy Star III: An epic quest, which will span across 3 generations of your characters...with 4 different possible endings to boot!! Mind you that this is the 3rd RPG on your single GBA cartridge...and it's not too shabby either. Viewed weaker than the 2nd and 4th installment, I personally liked III, as it was one of the most interesting RPG's I played at the time. It still holds up for me, and I can get past the graphics not being in 3D or having super flashy lens flaring magic. I really liked the music in III, and the GBA version sounds very similar here. While not orchestrated like Final fantasy III (VI) on the SNES, PS III had tunes, which stood out in my mind a lot. I still remember them to this day.
All 3 games on one cartridge...games that you would have a hard time finding individually (especially a Master System PS) is having your cake and eating it too...I hope Phantasy Star IV is next.
Unfortunately, Phantasy Star IV, the one that somewhat returned to its roots, was not included due to size constraints. A re-release of that game is imminent. There's also a save bug in PSI, where the game will occasionally crash when you try to save. Thankfully, PSI (and PSII when you get a secret item) allow saving in dungeons. Have fun with this!