Spider Ball Track

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Spider Ball Tracks (also referred to as magnetic rail system tracks) were introduced in Metroid Prime and since then have appeared throughout the Prime Series. Using magnetic force, they allow objects with an opposite polarity to attach and traverse them. Samus can only navigate them once she acquires the Spider Ball upgrade for her Morph Ball. If Samus uses a Bomb whilst attached to a track, it will disengage her from the track and cause her to jump up, or fall down, depending on the situation of the track. In Metroid Prime 2: Echoes and Metroid Prime 3: Corruption, the Boost Ball upgrade will repel Samus away from the track.

Magnetic rails are often used by the Space Pirates for transport of small cargo, although it unclear what actually bears the cargo, it is possibly small drones. O-Lir states that the machines of the Sanctuary Fortess use them to reach areas not normally accessible.


Metroid Prime 3: Corruption concept art for the Powerworks room of SkyTown.

A Spider Ball Track could be seen in Metroid Prime Hunters: First Hunt, in Regulator Mode (which is a training hologram) on the floor of a ramped shaft. More tracks can be seen bridging the floors of some raised platforms on Celestial Archives in Metroid Prime Hunters, but these are also not usable by Samus due to a lack of the Spider Ball upgrade. Their presence in this ancient location suggests that the technology is thousands of years old.

In Metroid II: Return of Samus, the Spider Ball can be used on all surface areas.

Official dataEdit

Logbook entriesEdit

Sentinel comment (Metroid Prime 2: Echoes)Edit

"The machines travel on a network of magnetic rails. They go to places you cannot reach.
It's a pity I didn't have the time to craft a way for people to use those rails as the machines do."


  • There is a glitch in Metroid Prime that allows Samus to get an early Ice Beam. By looking slightly to the left of a Spider Ball Track and jumping against it, it is possible to climb it without the Spider Ball.


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