Energy Centre

The Energy Centre is an optional location which can be reached from the Eastern Top Level. It could be considered the seventh main area, after Sorrow Peak and before Fire Hole, but in this part of the game there is no clear order. In-universe, it is where the substance extracted from the Fire Hole is used to power the Research Stations.

Access
The area becomes locked if there is more than one character in the party. Thus, to enter, Emerald must be alone.

To open the door to the Energy Centre, one must solve a puzzle in which a 4-digit code is entered.

Ember's Brain
The area is almost entirely linear, with only one side room. After solving a second puzzle that blocks the way, there are two places where Emerald will be spontaneously transported to dark dream sub-areas, named "Ember's Brain A" and "Ember's Brain B". Each contains a single boss demon.

Enemies
There are only two encounters, both large and unique boss Demons:
 * Demon 57
 * Demon 59 (comprising Demon 59A, Demon 59B (x2), Demon 59C, Demon 59D)

There are no random encounters.

NPCs
The only NPC present is Ember, who stands at the end of the area. If he is reached, he can be recruited into the party.

Music
The music that plays in the main part of the Energy Centre is called Intoxicated I Love You.

The music that plays in the Ember's Brain sub-areas is My Kind of Dark Mind.

The music that plays during combat is What You've Become

Trivia

 * The names of the Ember's Brain music reference the Aviators song, Psychoactive, which contains a whispered section where the lyrics are not entirely known but are highly likely to include those names.
 * The third song for the rest of Energy Centre is a remix/cover of a SayWeCanFly song.