There were actually three entried in the GBA medabots RPG series which come in the form of Shingata medarot, Medarot Navi and Medarot 2 Core. In English we got medarot 2 core though Shingata was a remake in a different style.
+1 to it being one of the better "pokemon clones" though I like most of the clones. I am never sure why it did not get translated, I guess the anime was not as popular as it might have been or maybe the older games did not sell so well. Why there has never been a successful fan translation I have no idea.