The Spin Jump is a simple technique in every 2-D Metroid game (and Other M). Like its name says, Samus spins while executing it. It is performed by pressing the jump button while running. This results in far greater jumping distance than a normal jump. In Metroid Fusion and Metroid: Zero Mission, it is used to keep the Speed Booster's charge while jumping. The Space Jump in 2-D Metroids can be considered a continuous Spin Jump. The Spin Jump Attack and Screw Attack can only be used while Spin Jumping.
The technique seems to be also present in the Prime Series, as many cutscenes showing Samus obtaining an item (particularly Morph Ball upgrades) have Samus jumping and defying gravity by spinning in the air for longer than possible. In addition, in the original Prime game, when fighting Metroid Prime, every time Samus causes it to burrow to another, lower level, there is a short cutscene showing her spin jumping through the hole that Metroid Prime escapes through. Another instance of the Spin Jump's appearance in the Prime series is in the Metroid Prime 2: Echoes Multiplayer. When battling against others, if Samus does a normal Space Jump, the enemy will see Samus do a Spin Jump, although this does not affect Samus' Visor at all, as if she was doing a normal jump. Whether the Spin Jump occurs like this in the main story mode is unknown.
In Fusion, Zero Mission and Metroid: Other M, a Spin Jump can be performed out of a normal jump by pressing the jump button a second time.
Metroid Fusion manualEdit
"Press the A Button to jump. Move left or right while jumping to perform a Spin Jump."
Metroid: Zero Mission manualEdit
"Press the A Button to jump. Jump while running left or right to perform a spin jump."