Alterna Space Center

Alterna Space Center is the finale of the single-player campaign of, Return of the Mammalians.

Alterna Space Center is located at the center of Alterna. Initially, the area is covered by a large amount of sharp fuzz and is inaccessible. After Agent 3 gathers the three treasures, they and the other members of New Squidbeak Splatoon assemble these treasures into a lawn mower-like tool, which the Captain then uses to destroy the fuzz, allowing the team to go to Alterna Space Center. However, the Captain hurts themselves in the process and the tool breaks. The members of Deep Cut then appear to make another attempt in taking the treasure back, but are told that the treasure is no longer needed and they can have it. They then help the team find Cuttlefish, who is now properly located at the top of the launchpad.

The rocket, The Spirit Lifter, is filled with Fuzzy Ooze, and Mr. Grizz plans to use it to spread the Fuzzy Ooze all over Earth. The Great Zapfish can also be seen sealed in the steerage to power the rocket.

Trivia

 * This sequence shares a few similarities with the Escape sequence of Octo Expansion:
 * They are both a series of continuous missions ending with the final boss of the mode.
 * The player starts both sections without their main weapon and has to retrieve it later.
 * Both sequences have a section (Diaphragm Phase in Octo Expansion and The Spirit Lifter: First Class in ) that involves unlimited use of a particular special weapon (Inkjet and Zipcaster, respectively) in order to power something with at least one energy core.
 * Both sequences feature two songs by the game's main idol group that play throughout every section except the first one and the last two.
 * Both sequences feature at least one song by the game's main idol group which contains a riff on "level completed" jingle (Fly Octo Fly, in reference to TEST PASSED! and Thang Obtained in Octo Expansion)
 * Both sequences can be replayed after being completed by approaching an object and interacting with it to relive memories.
 * The missions in this sequence are the only ones to feature Fuzzy Ooze, which otherwise only appears outside of missions in The Crater and Alterna.
 * During the in-between stages of this sequence, seven audio clips of Engilsh-speaking voices that seem to be recordings of rocket launch announcements can play at random.
 * These clips are audible throughout Alterna's Site areas, but are heard clearest in the Space Center. This suggests they are being broadcast over the Center's speaker system.