The Unfamiliar Central Core is a sentient dark black spherical antagonist who powers the entire land of Unfamiliar. It gives the player guide words in the levels, but as the player progresses the more angry and rage-filled the words will be, to the point of the words becoming red and lethal.
The Unfamiliar Central Core first appears in a large spherical zone. As the battle begins, the core will talk through the text words, and the bing sound that sounds when the words are shown is echoed throughout the place.
As the player escapes the countdown clock to burning in an explosion, the core can flash on your screen briefly.