Imagination

Imagination is the main source of energy that fuels LEGO Universe. In various forms, it powers starships, and sustains minifigure life.

Forms
Imagination comes in many forms, from the solid compound, imaginite, to liquid imaginite fuel for and land vehicles.

In its natural state, which is a liquid, it can be infused with drinks to provide a healthy and rejuvinating beverage similar to caffiene in coffee. A few drinks infused with imagination include faction drinks like Assembly Awesome Aid. Imagination is essential to sustaining minifigure life.

Another form of Imagination is Imaginite, which has various forms/colors depending on the elements that make up the compound. Imaginite is mined from the ground and has various uses depending on the color.

Imagination is also a major component in imagination fuel. Imagination fuel is made from a liquid imaginite compoud, which can be made in a lab, but is usually dug up from imagination wells. It is more useful than pure imagination, because it burns more easily and more completely.

Maelstrom
Maelstrom is born from corrupted imagination. Maelstrom can't "see" in the traditional sense, but instead detects imagination eminating from minifigures and their technology. This was exploited in Into the Fire, where a cloaking device was used to block imagination signals, rendering ships invisble to Maelstrom. Maelstrom needs imagination to continue to spread its infection, which is why it is drawn to sources of imagination.

The Nexus
The Imagination Nexus is a source of pure imagination. It has the appearance of a giant beacon, with a beam of pure imagination stretching to the sky. Since the nexus is self-sustaning, it is a nearly limitless source of energy.