Hands down the best 2D metroid, even tops super metroid in my opinion. Boss battles are fast paced and requires concentration, beating them is extremely satisfying. Level design is among the best I've seen in a video game, so good that when you go the wrong way you subconsciously go on the right path within minutes. Smooth gameplay and controls. Perfect balance between risk and reward. Easily the best metroidvania you'll play. Absolutely recommend.