The Grapple Voltage as it is obtained.
The Grapple Voltage is an upgrade for the Grapple Beam and gives Samus Aran the ability to either siphon energy from or give energy to objects and creatures. This ability is similar to the energy-draining abilities of Metroids. It appears in Metroid Prime 3: Corruption and is obtained after defeating Gandrayda.
If Samus siphons energy from something, she gains health, and if she gives energy, she loses health. Note that giving up energy is a useful gameplay mechanic - Phazon enemies can be overloaded and explode, and during a certain part of the game, Samus is practically required to lose energy via this method. The Grapple Voltage can also be used to drain energy from certain enemies (like Shield Pirate Troopers or "Dragoon" Battle Drones) which can be grappled. In some cases Samus needs to drain energy to power down shields blocking doors.
Enemies are killed much faster if they are overloaded with energy than if all their energy is siphoned away.
Like several power-ups in Metroid Prime 3: Corruption, it has a Hypermode counterpart, which is called the Hyper Grapple.
Trivia
- Although purple doors are shown in the key of the map, there are no actual Grapple Voltage doors in the map or game. No one knows the reason for this, but it is possible that there were special Grapple Voltage doors which were then removed before release and the icon was left in the key by accident. Instead of being used to open doors, the Grapple Voltage is used only to power doors, or disable shields blocking them.
- In Normal mode, due to the differing rates of energy absorption/emission into Voltage doors - specifically absorption is about twice as efficient - Samus can utilise Voltage doors to slowly but surely regain all her health by alternating charging and absorbing, as long as the Voltage door is not completely drained or energised. This fails in Veteran and Hyper modes, as in Veteran the rates are identical and Hyper the rate is in fact higher (causing increased life loss if repeated).
Gallery
| Grapple systems |
|---|
| Grapple Point • Ship Grapple Point Grapple Beam • Grapple Swing • Grapple Lasso • Grapple Voltage • Hyper Grapple Ship Grapple Beam |