Our champion used a device that made moving through liquid like moving through air. The Ing have taken it. If you wish to explore Torvus freely, you will take it from them!

A-Voq, referring to the Gravity Boost.


The Gravity Boost upgrade on Samus.

The Gravity Boost is a Luminoth technology once used by A-Kul, the champion of Aether. Developed during the war, it negates the effect of liquid hindrance on its users. At some point the Ing stole this device and sealed it within the deepest part of Torvus' flooded temple.

Samus Aran reclaimed the Gravity Boost power-up in Metroid Prime 2: Echoes. It helped Samus move through the water with ease and let her do a triple Space Jump underwater (it actually makes her float, but the result is pretty much the same). It was located in Torvus Bog, in the Hydrochamber Storage room. Right after Samus collected it, she had to fight the Alpha Blogg, which was the guardian of the item.

Grav boost

Gravity Boost - Dark Torvus Temple.

The Gravity Boost has a similar effect to the Gravity Suit in other games in the series as liquids no longer hinder movement and vision is improved in comparison to before. In addition, the upgrade grants an additional third jump that allows Samus to further access specific areas underwater with it when possible. The Gravity Boost also functions in Dark Water, but Samus will not sink into that toxic substance without the Light Suit.

At the end of her mission, Samus returned all the Luminoth upgrades she acquired to them, including the Gravity Boost.

Other appearances[]

The Gravity Boost also makes an appearance within the Metroid Prime 2: Echoes multiplayer mode. It behaves identically to its single-player counterpart, though it can only be fully utilized in the stage Pipeline. This is due to the fact that there is no water in the other stages, with the exception of Shooting Gallery only possessing shallow ponds of Dark Water. The Gravity Boost attachment itself is never seen during multiplayer gameplay.

Official data[]

Metroid Prime 2: Echoes manual[]

"Once Samus finds the Gravity Boost upgrade, she'll no longer be hindered by liquid environments and can float on command while underwater--simply press and hold the B Button after performing an underwater Space Jump to rise high up through the liquids."

Metroid Prime Trilogy manual[]

Gravity Boost
"After doing Space Jump in water, press and hold the B Button and you will be able to rise up through the water for a fixed time."

Metroid Prime 2: Echoes acquisition message[]

"Gravity Boost acquired!
While underwater, press [B] to jump. While moving, press [B] again. Press and hold [B] after that to slowly rise in the water.
Additional data downloaded to Inventory Screen. Press [START]/[2] to access the Inventory Screen."

Metroid Prime 2: Echoes Inventory data[]

Gravity Boost

Metroid Prime 2: Echoes

Inventory entry

The Gravity Boost eliminates the effects of liquid on movement.

Samus's Notes

While underwater, press and hold GC B button/Wii B Button after performing a Space Jump to activate the Gravity Boost.
While using the Gravity Boost, you will slowly rise and move through a liquid environment.

Metroid Prime 2: Echoes: The Official Nintendo Player's Guide[]

Gravity Boost
"The Gravity Boost gives you free and unhindered movement while underwater. It also allows you to float upward for a period of time. To activate the float feature, double-jump, then press and hold B a third time."


Gravity Boost

Samus uses the Gravity Boost out of water.

  • In one cutscene, after Quadraxis's head is destroyed, she used the Gravity Boost to jump away from the exploding head. This is contradictory to the fact that it is exclusively for underwater use.
    • However it is possible she was using her suit's thrusters (which are used as part of the Space Jump Boots) and it just looked like she was using the Gravity Boost as her thrusters are apparently incorporated with the Gravity Boost.
  • When Samus acquires the Light Suit, the Gravity Boost merges into her back leaving no visible trace, and she is still able to perform the ability. This is likely to demonstrate that, unlike the Dark Suit, the Light Suit was designed specifically for Samus by U-Mos – the "ultimate blend of Chozo and Luminoth technology".
  • Skipping the Dark Suit allows for Samus to obtain the Gravity Boost in her Varia Suit. Though it is not visibly shown in gameplay on the Varia Suit (similar to multiplayer), it is still seen being attached to the suit's backside during the acquisition cutscene. Parts of the Varia Suit's backside thrusters appear to clip through the Gravity Boost, seen at the end of the cutscene.
    • In a similar fashion, the Gravity Boost can be obtained while wearing the Light Suit, where the attachment itself appears to be more of a fit with slight visible spacing in-between. This is likely due to the slimmer design of the Light Suit.
  • Metroid Prime: Federation Force features a similar ability with the Federation Force's Mechs. They are able to fly in midair with a booster, used to traverse large gaps. This is handicapped by a Hover Gauge.
  • In the original GameCube version of Echoes, the Gravity Boost can be entirely skipped using a glitch known as the Underwater Dash.[1]