I remember this being a strange pokemon-esque rip-off back when that was all the rage. the creators had intended for this I.P. to be the next big thing with shows, merchandise etc. but it didn't take off. the story is kind of dark for a children's game and the premise has you both capturing monsters and fighting along side them against bosses. the music was very basic and graphical complexity was very poor being on the GBC, i tried to play again recently and it doesn't really hold up at all. There's still some fun to be had here but it's very dated.