It's just as good if not better but it starts off very hard. It's pretty painful until you get a bunch of energy tanks. After the crap boss you fight while your energy is draining the whole time, it picks up drastically and the boss fights are some of the best I've witnessed. Also, the Morph Ball puzzles were pretty intricate and fun to conquer. If they just threw one more optional energy tank in the beginning I'd have no problem recommending it. I still don't really, but just know that from the 1 hour mark to around hour 4 it's pretty tough and there are 2 or 3 more difficulty spikes like that, that follow, though not to the same degree. Also, the atmosphere is very different from Prime 1, very dreary on purpose, but is just as high quality and unique for Metroid.