The original Gameboy game had a surprisingly large number of power ups for such a simple game, but Samus Returns expands on them to provide power ups that would make appearances in other Metroid games such as the gravity suit, power bombs and the grapple beam

Some of the combat mechanics, especially the big fight against the Diggernaut (guardian of the Power Bomb), are unclear

, red hurts you, the trick is to use power bombs to launch yourself in morphball mode with spider ball, which is a hidden skill which is never hinted at in the game, just like you needed to use the power bomb on the metroid queen in other m, very annoying