Energy ball

An energy ball is a sphere that is about the size of a nano-bomb, a robot train's hand, or a railer's body. It is colored based of where it is from. Energy balls are stored in Railwatch where it can be used to charge trains or power Genie's inventions. Energy balls are charged by railers when they go on rides.

Wind energy
Wind energy balls are found in windland. They are white in color and are charged by gusts of wind up high. Railers take a ferris wheel and activate a balloon when they reach the top, taking flight. After charging the balls, they drift onto the ferris wheel, deactivate their balloon, then throw the wind energy ball into the storage area of the ferris wheel.

Water energy
Water energy balls are found in waterland. They are blue in color and are charged by flowing water. Railers ride a waterslide clutching the energy balls to charge them. They then deposit the balls into the storage.

Light energy
Light energy balls are found in sunnyland. They are yellow in color and are charged by solar energy. Railers relax in the fields of sunnyland to charge the energy balls.

Fire energy
Fire energy balls are found in mountainland. They are red in color and are charged by heat. Railers chop down trees and when there is a forest fire, these balls absorb energy.

"Forest energy"
"Forest energy ball" is a nickname given by Mos, Doss, and Duke to some empty energy balls containing some fireflies. They believed the fireflies were rare energy flies which contain energy. They attempted to trade some with Vito, who learned they were decoys when he asked Genie.

Rock energy
Rock energy balls are found near a mine. They appear to be rock-like and not spheres. They are grayish-pink in color.

Absolute energy
Absolute energy is a combo of all four energies. It is rainbow in color. It will disperse strongly, so it must be held in a black ball, like the one made by Train X. It is used to counter shadow energy.

Shadow energy
Shadow energy is an ancient, mysterious energy. It was hidden throughout rail world until a clump of it broke through and caused The Crisis.

Synergy
According to Gary, there is an order of energy balls that maintains a balance. Water energy is strengthened by fire energy, but fire energy is weakened. This is because fire is put out by water. Fire energy is strengthened by wind energy, but wind energy is weakened. This is because wind can cause fires to spread. Wind energy is strengthened by light energy, but light energy is weakened. This is because wind is often associated with power outtages losing light. Light energy is strengthened by water energy, but water energy is weakened. This is because light refracts in water and water evaporates under the sun, which is associated with light. Unbalanced combos creates natural disasters. Wind and water energy creates a vortex that summons blizzards. Fire and Light energy must be combined to balance out the energy