this is probably my favorite gba game (this or castlevania). it's better than wario land 4 in my opinion. i like the thinking you have to do in some of the later levels. it re-creates the psx and ps2 games almost perfectly. klonoa is turning into one of my favorite franchises, and i really hope they bring more to the gba.
this game had me coming back for more long after i beat it. i'm still playing it a lot. if you get 100% of the gems in all of the levels, i heard that something crazy happens (maybe it opens up more levels?). so i'm trying to do that. i've gotten 100% on quite a few levels, and more levels have appeared, so don't think you're finished with this game after you've beaten it.
the graphics are really nice and colorful. i love these kind of games and this is what the gba was made for! great game! 9/10